hi everyone i got this bike only last week, it was serviced on Friday, but i still have two problem that are both confusing to me: 1, it stalled twice on uphill while changing gear, i think i was shifting gear down, and the motor lost power. with my last bike if the bike would stall it would at least let me know that it is not happy, this one is different, it just lost power, at around 3000-4000 rev, i grapped clutch level, and gave it a bit of oil at no vail. is this normal? 2, bike had problem with warm start. this has happned 4 times and i have only ridden it about 6-7 times. it had been warmed up for 5 min before riding, then i would go somewhere that is about 5-10 km from home, do some shoping, and come back, start the bike, it does not start! this morning 5km from home i had both problem at the same time, it stalled and then, it won't start. i tried 20 times ,with the choke on or off, it seems it doesn't have to do with the choke, as i press the start button it doesn't do anything, and sometimes the motor did start but would rev to 500 and dropped off, and it sounded like as if it is cold, with some rattling noise as if something fell into the engine. i finally got it started by immediatly openning some throttle togive it some gas, and keep it reving above 2000 for a while before going back home. this is what i saw people do with some very old cars! what was wrong, or what i did wrong? cold start works fine, the the service on friday included spark plug change. bike is 1999, 56,000km. the warm start problem can not be repeated, i tried after i arrived home and it works fine again, it seems to happen ramdonly.