Hi all. I have been browsing this forum for a while, and have decided to go through with the recommended carb mods (I put the DJ kit in, and am really unimpressed) and remove the smog equipment on my 2002 XR650L. Well, I got home from work tonight and decided tonight is as good as any to start! Well, I got 3 of the 4 allen bolts out, then had to loosen the headers to get to the 4th (the one nearest the smog pump). Then guess what.....a seized bolt!! My impact wrench completely rounded out the inside of the bolt! So, now what? I guess i could drill and ex-out it....but this this is really in there good. Could I disconnect everything, but leave the pipe near the front of the cylinder head? Could i just plug it with something? I really want to get rid of the backfiring...as people are starting to think I am shooting at them thanks in advance, brandon Any help would be greatly appreciated!!