OK guys I need some answers please. I recently had my 2004 CRF 450 rebuilt by an engine builder that has been around for 30 years. I not going to name him, but I’m sure 90% of you guys have heard of him. Anyhow, I elected to have the Kibble valves put in and the Hot cam stage one. He also replaced the exhaust values as well and installed a Wesico high compression 13.1 or 2 piston or something like that. The problems I’m having is that it will stall easy and it is a bitch to restart, I’m taking about kicking it until I feel that I’m going to have a heart attack. Today I raced four classes, the first class I made it for one lap and I stalled it in the whoops and it took me about 15 minutes to restart it. The second class it also stalled, but luckily I pull in the clutch and jump started it without losing a position. The third class I wasn’t able to start the bike on the line and the only thing I did was washed it before the race. Also, I was unable to get the bike started for the fourth class. (We ran one moto formats due to a heavy rain). My main question is that will high compression piston is the bike a lot harder to start? Also, is it possible to flood a four stroke so bad that the plug needs to be replaced? The bike will act like its trying to start, but it wont. Please help me.