gfischer
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I have yamaha banshee 1996 it has a hot rod 4 mill crank with wiseco 513MO6550 prolite piston.It has a ADA Racing 21cc Domes cut 2 mills and no spacer plate under jugs. Jugs are stock ported It is running about 190 psi in each. the squist in ea. is .048. What can I do to bring down the compression to run pump gas? thank you George F.
