i have a 1998 cr250r. i bought it in a bunch of pieces and had to put it together. i put it together and it was running fine. the other day the clutch went out. i replaced the clutch and ever since then i haven't been able to start it easily. when i does start the motor is flooded and won't idle. it runs good when i'm running the crap out of it but as soon as i let off the throttle it starts running sluggish. i can also kick it all day and it wont start. usually have to roll it off a hill and bump start it. the only mods are fmf gnarly pipe and fmf shorty silencer. i has had a recent rebuild with maybe 5 hours on the motor. as soon as i let off the throttle and it starts running crappy, i pin the throttle and it's sluggish then peps up like the spark plug is loading up and the motor is flooding. i have replaced the plug and it is getting good fire now. what could be wrong? i'm really frustrated because it is starting to warm up and i wanna go riding!