I am trying to tune my engine up now that I have finally got my non running CB350 that I bought at the end of the summer running. My issue is that the rocker arms don't seem to free up when I get the engine in top dead center. I was wondering what the cause of this may be. Did I set my cam chain properly? I lined up the engine to TDC and then moved 90 degrees to that mark, and that is where I set the cam chain. I looked through the spark plug holes to confirm that the piston was indeed at the top. Let me know what I may be doing wrong as my engine when it did fire up was idling high (around 3000 rpm). I am really excited to tune it up and getting it riding again. thanks!