hey guys, I am about to blow my brains out trying to get this carb dialed in, and I am not sure what I am doing wrong, but I have read all the jetting articles as well as looked all of the stuff up, and every time it seems that I still cannot get it running right. Maybe someone can shed some light on the problem because I think I am it. The bike is a 2004 YZ 450f, I have a FMF power bomb header/FMF Powercore 4 Slip on -I am located in Raleigh, NC and the temp here is around 90 degrees, and we are 3500ft above sea level -I have a R&D Powerbowl 1 installed on the bottom of the carb with adjustable leak jet -New top end, other than that everything is stock as far as jetting would be concerned. Started @ Main Jet=170 Pilot=45 Needle Clip-Using Red Needle out of JD Jet Kit @ 4th notch from top Air/Fuel Mixture Screw on carb=2 turns out R&D Powerbowl Leak Jet=2.5 turns out With this, the bike was doing pretty good, but still had a popping, and the header pipe would get pretty nice and orange by the engine, if I am riding too slow in technical portions of trails, guaranteed overheating issues. Changed Carb to Main Jet=168 Pilot=45 Needle Clip=Using Red Needle still, went from 4th notch from top to 2nd notch from top Air/Fuel=2 turns out R&D Powerbowl Leak Jet=2 turns out After riding at these settings, the bike felt like it was holding back on power, didn't feel to have near as much power as normal (when I say power I guess I mean the bike isn't constantly standing straight up in the air, almost feeling like it was taking a few split seconds to really hit hard power) Does anyone have any suggestions PLEASE on what they may think the problem is? Also, if anyone can give me a good tip on the proper way to adjust the leak jet on the Powerbowl it would be greatly appreciated because right now I am trying to use the instructions to set it, but I will be honest in saying I don't know exactly how to set it properly or what to look for in case it isn't set properly (how would I know other than the bike feeling like it's not running right)? PLEASE ANY HELP WOULD BE GREATLY APPRECIATED! Thanks again guys for all the help you all give.