Hey guys I just bought this bike as is no warranty and it rode fine on the test drive, a few days later i opened it up on a straght and it did fine at first then it lost all power and when into this buck mode hwere if i held the throttle it it rev and die rev and die, making it almost impossible to hold onto. I put fresh fuel in it thinking the fuel was old It did not fix the issue. bike drives fine under 7k rpm and seems to have plenty of power other wise it just dies when i go to pass a car or something. im thinking fuel pump? also when i bought it the gas gauge doesn't work i'm thinking that's unplugged, im looking for a good starting point not a hey go there this apart because i think thats it, has anyone else experienced this with the 650?