The Ski would bog down really bad, Both on trailer and in the water.. So I got a bill for around six hundres and thrity bucks.. Carbs rebuilt. When I put it back in the water it ran better but still wasnt the best. So the next weekend back out on the water we go with a new tank of gas.. It was even worse.. So after one hour of riding I took it to the dealer, And he added something to the gas, and new plugs. After 25 mins. of surging the ski ran great for a few days !!! Eventually the ski has no mid range or top speed. Dropped from 67 to mid 50s.. So I took it to a guy that does the work on the side. He said it doesnt look like they did any carb rebuilding. I got this work done in 4/27/09. Is there a way to really tell by looking at the old carb parts? To see if they reused or bought new ?