Alright so i am a new member here, also new to buell, however not new to motorcycles. about 3 weeks ago i bought a 2001 buell blast, not running. I took it home, checked it out, and established it had virtually no compression, (30psi, and 60 with a tablespoon of oil in the cylinder) so off came the head and cylinder, to see what the issue was, and also correct what appeared to be a minor leak from the rocker box to head gasket. once i got it all apart, it was obvious that the bike had run severely lean and the piston had melted, and seized the rings in their lands and wiped aluminum onto the cylinder wall. I believe i located the cause of all of this. the previous owner had put on a white brothers exhaust, that coupled with the factory lean jetting (42/165 on an 01, which i verified is what was in the carb.) as well as the exhaust breaking right before the muffler can, and the P.O. stating he was cruising on the highway at 80, bike started getting louder, and lost power. i believe caused a super lean condition leading to the above. bike has stock airbox, with stock style filter, no mods aside form the exhaust. so i got an oversized piston and ring set, as well as gasket set, from the local HD place, and took the rings piston and cylinder into the machine shop for machining. That done i took it all home, cleaned the parts with ATF, and a white rag untill the rag stopped turning dirty, and assembled per the FSM. i bought a new boot, and sprayed through the jets with carb cleaner. Initially i left the factory jets in, and gave the starter a go, bike started right up, though appeared to idle a bit low, but i could be mistaken, being unfamiliar with this bike. per recommendations from the HD shop and others i got new jets, 45/175 they stated this would be sufficient for the aftermarket exhaust. i have put those in,as well as drilling the mixture plug out, and adjusting to 2.5 turns out, and the bike still starts, but idles way too low now, and it wants to die, and from time to time it will. Might be of note, the muffler can is still detached, so it is just open pipe ending just under the engine, i do not intend to leave it this way, but want to try my best to get it running proper before i spend money on a custom exhaust. my real question is would the open exhaust be causing the low idle? i believe not, but i have run out of ideas as to where to go from here, the bike is ride-able, however it has the low idle, wanting to die issue, and occasional stumble off idle, anyone have any suggestions. I am located in kansas city ks, for reference as to sea level, and environmental factors. any ideas as to what i need to do next would be great. sorry for the long post, and slightly haphazard nature of my relay of information.