OK well sometimes when I am shifting and I miss a shift the blaster revs out of control. the only way to stop it is to jam it in gear or think fast enough to kill it. any ideas what could cause this?
LEAK TEST IT!!!! If It has "hanging revs" it's most likely an air leak. Of not, u r probly running really lean on the main jet. Do a plug chop. But leak test it first!
Start by listing your mods and ALL carb specs. Clean carb, leakdown, check that throttle cable works good, slide cap gasket is good, oil injection nipple is blocked off. When you miss a shift are you even letting off throttle?