Can anyone tell me how to upload a video file? I have a 91 TRX 300 that I bought a few years ago. With some help from ShadeTree I was able to address some shifting issues. I had both covers off and did not see anything obvious. It starts right up and runs / shifts fine, and the compression was in the 160's. It does not seem to have the power a 300 CC engine should. I am planning on pulling apart the top end to freshen it up. The engine is and always has been a bit noisy. I have a short video clip with the engine running. I am trying to find out if this sounds like the valves/ cylinder or bottom end. Any help would be appreciated.