My son just bought a 2002 blaster as a project. He was told that the pistons and rings were recently replaced. The headlight, kill switch, rear brake, and kick starter didn’t work. We fixed the kick starter and I should be good with the others parts. One thing that bothers me is that it seems underpowered and it revs pretty high easily. That sounded like an air leak so I looked around and found that a previous owner had disconnected the oil pump but didn’t put a cap on the oil intake on the carb. I put a cap on the oil port and it runs a little better but not great. What is the next move? Replace the cylinder/piston/rings or run a leak test? The rubber boots into the carb look like they are held on with lousy radiator clamps so that might be a start. What do you guys think? Thanks