Originally Posted by
ANAKIN
guys, my plus 4c is somehow loosing its compression, the top end is gaining power but i am loosing too much in the low end. i though of removing 1 shim in the combustion chamber,(silver) just to regain compression(hopefully) and just re-tune it.
will it work?
pros and cons?
help guys!!!

Check your clutch set-up before you do anything else to it.
Weak or broken clutch springs, clutch shoes hanging up on
the flywheel pins, will kill the low end performance of any
engine.