I put in a stage 2 cam and kibblewhite valve springs but it doesn`t run like it should. It feels a bit like a 2-stroke just before it starts pulling. Definitely not as powerful as original in any rpm, except for a little "push" just before the limiter kicks in. I lost the cam card so I can`t check the timing, it seems like the markers does`t line up like they should. After the cam swap it also run richer than before. Help!???