diff --git a/poc/py/state_to_buttons.py b/poc/py/state_to_buttons.py
index 80fb887..486541e 100644
--- a/poc/py/state_to_buttons.py
+++ b/poc/py/state_to_buttons.py
@@ -16,7 +16,7 @@ def main():
          if not key in buckets:
             buckets[key] = False
          buckets[key] = False if line[0] == "/" else float(line.split()[-1])
-         print(sorted([(int(i),buckets[i]) for i in buckets if buckets[i]]))
+         print("[", " ".join(sorted([f"{int(i)}={buckets[i]}" for i in buckets if buckets[i]])), "]")
 
 def get_args():
    ap = argparse.ArgumentParser()
diff --git a/poc/py/stream_to_state.py b/poc/py/stream_to_state.py
index b525520..9dce33c 100644
--- a/poc/py/stream_to_state.py
+++ b/poc/py/stream_to_state.py
@@ -7,6 +7,7 @@ def main():
    args = get_args()
    with_(
       N=args.n,
+      M=args.m,
       R=args.r,
       T=args.t,
       p=args.p,
@@ -15,12 +16,13 @@ def main():
 def get_args():
    ap = argparse.ArgumentParser()
    ap.add_argument("-n", type=int, help="queue capacity", default=3)
+   ap.add_argument("-m", type=int, help="queue fill line", default=3)
    ap.add_argument("-r", type=int, help="drain rate per second", default=2)
    ap.add_argument("-t", type=int, help="threshold for state", default=2)
    ap.add_argument("-p", type=str, help="path to write out to", default="/tmp/cbappend.both.txt")
    return ap.parse_args()
 
-def with_(N, R, T, p):
+def with_(N, M, R, T, p):
    triggered = CBAppend(p)
    released = CBAppend(p)
    cb = CBFork(triggered, released)
@@ -33,7 +35,7 @@ def with_(N, R, T, p):
          [buckets[i].pop() for i in buckets]
       else:
          if not got in buckets:
-            buckets[got] = Bucket(N, R, T, cb.cb(got))
+            buckets[got] = Bucket(N, M, R, T, cb.cb(got))
          buckets[got].push()
 
 def readline():
@@ -57,9 +59,10 @@ class State():
       self.f = f
 
 class Bucket():
-   def __init__(self, N, R, T, CB):
+   def __init__(self, N, M, R, T, CB):
       self.q = 0.0
       self.N = N
+      self.M = M
       self.R = R
       self.T = T
       self.CB = CB
@@ -81,7 +84,10 @@ class Bucket():
       if new_state == self.__last_state:
          return
       self.__last_state = new_state
-      self.CB(State(new_state, int(100*self.q/self.N)/100.0))
+      filledness = int(100*(self.q/self.M))/100.0
+      if filledness > 1.0:
+         filledness = 1.0
+      self.CB(State(new_state, filledness))
 
    def state(self):
       return self.__last_state
diff --git a/poc/py/test.sh b/poc/py/test.sh
index 8b9b958..b296fd2 100644
--- a/poc/py/test.sh
+++ b/poc/py/test.sh
@@ -3,18 +3,29 @@
 set -e
 set -o pipefail
 
+peek() {
+   while read -r line; do
+      echo $line
+      echo $line >&2
+   done
+}
 cleanup() {
    kill -9 $(jobs -p) || true
 }
 trap cleanup EXIT
 
 python3 ./state_to_buttons.py &
-python3 testdata/rand_0_13_stream.py \
-| (
-   while read -r line; do
-      #echo $line >&2
-      echo $line
-   done
-) \
-| python3 ./stream_to_state.py
 
+python3 ./testdata/rand_0_n_stream.py \
+   -n 6 \
+   -b-min 1 \
+   -b-max 10 \
+   -d-min 100 \
+   -d-max 2000 \
+   -between 100 \
+| peek \
+| python3 ./stream_to_state.py \
+   -n 20 \
+   -m 15 \
+   -r 15 \
+   -t 14