son got an old qlink sxs, at first wasnt starting good and was leaking fuel very bad out carb and pooling under it. had a hose off that seemed to go from tank to highest nipple on carb..... put hose back on, cleaned carb, and plug. now doesnt leak and cranks fine, but once engine warms wants to cut out back fire and die.....will crank right back up and idle fine until give throttle ....i mean looks like a carb to me ........has fuel pump though.....i dunno if those two will even work correctly together, does this sound right? or did someone just try to force this to work? please help!!!!!