I have a 1992 Yamaha wr500Q I bought last year. Had some probs with the ignition coil and CDI but after replacing these it runs great. However I don't think its performing very well. Supposed to be a 2 seater but put two people on it and it bogs down. Even with just opne person it seems like every wave I hit is like a crash landing. It handles great but doesn't go as fast as I think it should. I had a rock stuck in the impeller and removed that and noticed one of my imp blades was damaged. I want to replace it but want to use either a Solas or Skat-Trak imp. Any other suggestions for improving performance? Maybe a better imp?