I have a 1996 Montego tigershark. I rebuilt the carb on the unit last year. I have the high and low needles on the carb to specifications of the watercraft. My problem is now the tigershark starts up and will idle, and can give bursts of throttle and it moves. But when I hold the throttle all the way down it stalls out. I am not sure where to turn to next. I have checked the lines, carb seems to be getting gas. Any help would be greatly appreciated.