RE: Tower .46 break in
poor compression when warm / hot indicates a couple of things like the engine is still not run in or the cylinder is becoming a little over warmed. set your needle to 2 turns out and run the engine flat out for no longer than 30 secounds , bring back to idle speed for 2 minutes then do the same flat out again. repeat this process for atleast 2 tank fulls of fuel [ 20 to 1 mix ]