diff --git a/k2v_test.py b/k2v_test.py
index 653c7489..d56f5413 100755
--- a/k2v_test.py
+++ b/k2v_test.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 
 import requests
+from datetime import datetime
 
 # let's talk to our AWS Elasticsearch cluster
 #from requests_aws4auth import AWS4Auth
@@ -17,6 +18,57 @@ auth = AWSRequestsAuth(aws_access_key='GK31c2f218a2e44f485b94239e',
         aws_service='k2v')
 
 
+print("-- ReadIndex")
 response = requests.get('http://localhost:3812/alex',
                         auth=auth)
-print(response.content)
+print(response.headers)
+print(response.text)
+
+
+print("-- Put initial (no CT)")
+response = requests.put('http://localhost:3812/alex/root?sort_key=b',
+                        auth=auth,
+                        data='{}: Hello, world!'.format(datetime.timestamp(datetime.now())))
+print(response.headers)
+print(response.text)
+
+print("-- Get")
+response = requests.get('http://localhost:3812/alex/root?sort_key=b',
+                        auth=auth)
+print(response.headers)
+print(response.text)
+ct = response.headers["x-garage-causality-token"]
+
+print("-- ReadIndex")
+response = requests.get('http://localhost:3812/alex',
+                        auth=auth)
+print(response.headers)
+print(response.text)
+
+print("-- Put with CT")
+response = requests.put('http://localhost:3812/alex/root?sort_key=b',
+                        auth=auth,
+                        headers={'x-garage-causality-token': ct},
+                        data='{}: Good bye, world!'.format(datetime.timestamp(datetime.now())))
+print(response.headers)
+print(response.text)
+
+print("-- Get")
+response = requests.get('http://localhost:3812/alex/root?sort_key=b',
+                        auth=auth)
+print(response.headers)
+print(response.text)
+
+print("-- Put again with same CT (concurrent)")
+response = requests.put('http://localhost:3812/alex/root?sort_key=b',
+                        auth=auth,
+                        headers={'x-garage-causality-token': ct},
+                        data='{}: Concurrent value, oops'.format(datetime.timestamp(datetime.now())))
+print(response.headers)
+print(response.text)
+
+print("-- Get")
+response = requests.get('http://localhost:3812/alex/root?sort_key=b',
+                        auth=auth)
+print(response.headers)
+print(response.text)
diff --git a/src/api/k2v/item.rs b/src/api/k2v/item.rs
index c74e4192..0eb4ed70 100644
--- a/src/api/k2v/item.rs
+++ b/src/api/k2v/item.rs
@@ -28,8 +28,8 @@ impl ReturnFormat {
 		};
 
 		let accept = accept.split(',').map(|s| s.trim()).collect::<Vec<_>>();
-		let accept_json = accept.contains(&"application/json");
-		let accept_binary = accept.contains(&"application/octet-stream");
+		let accept_json = accept.contains(&"application/json") || accept.contains(&"*/*");
+		let accept_binary = accept.contains(&"application/octet-stream") || accept.contains(&"*/*");
 
 		match (accept_json, accept_binary) {
 			(true, true) => Ok(Self::Either),
diff --git a/src/api/k2v/range.rs b/src/api/k2v/range.rs
index 29bca19e..37ab7aa1 100644
--- a/src/api/k2v/range.rs
+++ b/src/api/k2v/range.rs
@@ -41,7 +41,7 @@ where
 
 	let mut entries = vec![];
 	loop {
-		let n_get = std::cmp::min(1000, limit.unwrap_or(u64::MAX) as usize - entries.len() + 2);
+		let n_get = std::cmp::min(1000, limit.map(|x| x as usize).unwrap_or(usize::MAX - 10) - entries.len() + 2);
 		let get_ret = table
 			.get_range(partition_key, Some(start.clone()), filter.clone(), n_get)
 			.await?;
diff --git a/src/model/index_counter.rs b/src/model/index_counter.rs
index cabe9de5..13273956 100644
--- a/src/model/index_counter.rs
+++ b/src/model/index_counter.rs
@@ -24,7 +24,7 @@ pub trait CounterSchema: Clone + PartialEq + Send + Sync + 'static {
 pub struct CounterEntry<T: CounterSchema> {
 	pub pk: T::P,
 	pub sk: T::S,
-	values: BTreeMap<String, CounterValue>,
+	pub values: BTreeMap<String, CounterValue>,
 }
 
 impl<T: CounterSchema> Entry<T::P, T::S> for CounterEntry<T> {
@@ -51,10 +51,10 @@ impl<T: CounterSchema> CounterEntry<T> {
 				.node_values
 				.iter()
 				.filter(|(n, _)| nodes.contains(n))
-				.map(|(_, (_, v))| v)
+				.map(|(_, (_, v))| *v)
 				.collect::<Vec<_>>();
 			if !new_vals.is_empty() {
-				ret.insert(name.clone(), new_vals.iter().fold(i64::MIN, |a, b| a + *b));
+				ret.insert(name.clone(), new_vals.iter().fold(i64::MIN, |a, b| std::cmp::max(a, *b)));
 			}
 		}
 
@@ -64,8 +64,8 @@ impl<T: CounterSchema> CounterEntry<T> {
 
 /// A counter entry in the global table
 #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
-struct CounterValue {
-	node_values: BTreeMap<Uuid, (u64, i64)>,
+pub struct CounterValue {
+	pub node_values: BTreeMap<Uuid, (u64, i64)>,
 }
 
 impl<T: CounterSchema> Crdt for CounterEntry<T> {
diff --git a/src/model/k2v/rpc.rs b/src/model/k2v/rpc.rs
index 857b494d..397496c9 100644
--- a/src/model/k2v/rpc.rs
+++ b/src/model/k2v/rpc.rs
@@ -97,7 +97,8 @@ impl K2VRpcHandler {
 				},
 				RequestStrategy::with_priority(PRIO_NORMAL)
 					.with_quorum(1)
-					.with_timeout(TABLE_RPC_TIMEOUT),
+					.with_timeout(TABLE_RPC_TIMEOUT)
+					.interrupt_after_quorum(true),
 			)
 			.await?;