I have attached 3 images (cams, flywheel, air boot). This bike has been modified before I bought it. Exhaust cam was set forward 1 pin. A blue wire is severed also. It ran, but owner always had it warmed up before I got to his house. I haven't been.able to start it. I also reset the timing. ( chains have slipped since, so there is no way to get back to original teeth.). It backfires when we try using starting fluid in the air box. The boot also gets hot while trying to kick start. I've moved both teeth forward 1 pin from shown location with no better luck... Any ideas?