93' xr650l, supertrapp, clarke 4.7, big bore kit, larger exhaust manifold, excel rims, de-smogged, k&n filter, 18,000miles. Hi all, I am planning on doing Dave's mods this weekend, and have read all the material and watched the video. The write-up says to replace the "main jet" and "slow jet", but it does not specify whith what. At the bottom of the page, it say's the jetting should be 55/158 at sea level, are these the new sized jets that I replace the old one's with? Also, will my local Honda shop sell these new jets, or will I need to get them elsewhere? Price? thanks!