since I've been riding, I've had a few issues pop up with my bike performance. first, it was the coils stuffing up when it rained, and the bike pretty much ran on 2 pistons instead of 4. Now that I have replaced the faulty coil with one from my stash of CB spares, it runs great, except when it gets to about 6000rpm...it just won't go any furthur!' I give it stick slowly, but all that happens is popping and it makes the bike convulse almost, like their's a rev limiter kicking in or something. It could be anything really - timing, air/fuel ratio, stuffed secondary jets in the carbies, a whole myriad of problems, even the coils could still be stuffing up, I don't know. I would just like to able to go all the way around the Rev Dial to 9500rpm and be able to do it without the bike feeling like it has to try to get their. Is there some way I can rectify this problem? My housemate that is now back on two wheels and has been riding for about 20 years, suggested getting a set of race carbies for it. I would like to keep my bike a bit longer myself, but if I can't get this problem out of the way, I think I may have to get something newer, lighter, and faster.... I just want to fly.