I bought a 96 express 300 two stroke automatic and got it running in no time. When I'm riding it, it has a really loud whining sound coming from the transmission but rides fine and also it doesn't like to go into gear. I was wondering if the whining sound is normal or if it was the belt, clutch, low on fluid etc. Does the polaris automatic use gear oil? and if so what grade should I use and how much? I hope the transmission is saveable since used ones go for $500 on ebay. Hopefully its something simple or maybe they have a rebuild kit available. Any help would be great.