So basically the symptoms are as follow, when i go to turn the bike over its doesnt want to start until i have the throttle almost wide open, and then she will (with a lot of hesitation and very slowly) start up. some times i have to open the throttle all the way and she wont run past 3000 rpm, thats what happens most of the time. when it does get past that and i can actually use the throttle to push me try and start moving, the exhaust makes a noise kinda like its being choked or its about to bog out and die, i have to keep revving the bike and once i get moving it just runs like shit, its doesnt idle, bogs when i accel from a stop and kinda sputters when i give it throttle with excessive popping from the exhaust when i let off. almost sounds like something could be clogged. i was thinking maybe the jets are clogged, so i checked them and they were clear. i also cleaned my spark plugs and air filter. nothing has worked. shes old, 2001 and i just turned over to 60,000 miles today so its a worn bike. its my only vehicle and i ride it to work every day so i need it running, thanks.