I agree with Bill. I also think that leak checks should be performed warm. Engines are NOT going to be 30 degrees while operating. Who cares about compression on an engine that isn't running?

Jeff Hersom N3740J '67 150G "Gremlin"
Hangar W-6, Helena Regional Airport
Places I have landed Gremlin:
[Linked Image from visitedstatesmap.com][Linked Image]