What's going on fellas! I've got an 05 RM 250 and just went from the Pro Circuit R304 silencer to the type 296 nature freindly spark arrestor. My problem is the spark arrestor doesn't mate up like it should. The end cap rests heavily on the side of my rear fender. My subframe isn't bent. Has anyone else encountered this problem. If so what did you do. I'd hate to forsee the future of my baby with a hacked rear fender because I was forced to use a huge spark arrestor. I've attached a photo of my problem. I haven't installed the rubber grommets on the spark arrestor yet. You can clearly see that it still will not clear with the grommets intalled either.