Hey thanks for the response. Right now the polaris is at my sons house 2 hours away but I can tell you that 2 years ago I did a compression test on it and they were almost exactly the same. I dont remember the psi though. At that time I replaced the top cylinder gaskets. I own a auto service center so I have the tools to check those things but dont have the craft here right now. If you dont mind me asking, if the compression was low, wouldnt it run bad or not have much power? Thanks Chris