I have a 701 61x stock with a Coffman sizzler the ski does not run good I think it's a carb thing I changed the jets and the pop off spring still runs bad I tryed to tune it in but still no help if I lift it out of the water it seems to run ok but when I ride it its like it has no power and don't want to go and sounds on in the low end but in the hi end sounds like poop it almost sounds like it is bogging out bit not at the same time it has like a poping sound and almost no power barley gets up on plain any help would be great thanks