ok here is a weird one. i got 240 miles on the new tw200 and i thought it would be ok to open the thing up for the first time. i shifted through all gears kinda being easy but when i got to gear five i went full throtle and held it open till max speed "68 mph" held it for about 3 or 4 seconds and let off to about 55 mph where i held it for about .75 miles. when slowing down i had a few nasty backfires and at about 10-15 mph it just stalled out. i tried to start it and it was turning over but not starting. i let it sit for 20 mins and then it started. riding for about 2.5 miles it chugged like it was running out of gas and wanted to stall again, but i put it in reserv and the chug went away. bike had about a quarter tank of gas. next day i went and filled the tank up and have had no problems yet. does this sound like a normal tw occurance?