Originally Posted by Officespace

Monty,

My Nova +4c has about 4 1/2 gallons on it and seems to be losing power lately, but it still has a ton of pinch left. I was wondering if removing the thin head shim to give it more compression would help it gain some power back before I do a total rebuild on it? All the internals still look good, I just want to get some of the power back that it had at around 3 gallons.

Any input would be greatly appreciated!