I hope you have a good honest dealer. Often I find they have inexperienced mechanics and throw parts at the problem and that ain't cheap. On a side note, I think checking the carbs is a good place to start. They'll rebuild them of course and that is $$. You might have been able to install new carbs for the price they'll charge to check them. As we cajuns say in South Louisiana... C'est lavie (that's life). In the end you want a good reliable ski. Good Luck !!