Just got this ski about a month ago and love it. The only problem I'm having with it is when I take off. If I gas it hard from an idle it seems to slip(kind of like a clutch slipping)or maybe miss. It will do it 2 or 3 times real fast and then its fine. When it does it, it only a second long maybe shorter. It runs fine otherwise. Anybody have an idea what it could be?