My compression release on my 2001 sx 400 has broke. The actual lobe which rides on the cam chain gear has come up through the head of the engine amongst causing a bit more minor damage to other small parts involved. I havent had the bottom end checked for damage yet(hopefully none), but since I have the engine apart I would like to get a bit more power out of it. Someone suggested a high compression piston from wiseco stating that it "wakes the bike up". 1)Does anyone have any other suggestions? 2)Can I still use straight gas after bumping up the compression? 3)I also plan to change the cam roller bearings after hearing many people have had difficulty with them...what should I replace them with?