welshcharlie

hi guys (and gals..). am having problems with my beloved ty250 mono..only had it 3months, started having starting problems, just wouldn't settle down to a happy idle, just wanted to die..even after fine tuning idle/air screw whilst bike was warm. there is a spark and fuel is evident on plug. I have taken carb off and now (due to inexperience) haven't put it back together correctly..am having throttle issues.no resistance in throttle cable now, I no ill have to sort that but any other ideas for lack of starting/idling...is it fuel mix(50:1) is it carb? seems ok. although I haven't fully cleaned it out yet. Disassemble and reassembled 3 times and gave up after having found new issues due to my lack of experience..anyway any help greatly appreciated..also was told to put engine oil in ...this didn't seem right so didn't but it yet. others recommend light tranny oil. but what weight.cheers