RPM's & Prop

[Genie Aye]

If I had 100 comp on any cylinder and it is more than 10% lower than my highest---bad cylinder/s.

With only 100lbs comp--I would wonder what type of freshen up your mechanic did--almost sounds like some ports may hooked the rings from burr's.

I can tell you with a injector out on my engine--I lost about 10 mph on the top end--that is a engine rated at 218 at the prop.

Good luck--but the news you are giving is NOT good.

Bummed for ya.