I have been trying to troubleshoot this bad vibration on my 2001 softail deuce (fuel injected). I have 47,000 miles on it and am afraid it might be something inside the engine. I have covered the basic's. the engine mounts don't show any visual issues. the frame is not apparently cracked. tires are fairly new..... the vibration gets worse as the RPM's get higher. the gas tank raddles real bad, and i can no longer see out of my mirror as i drive. What should i take a closer look at? What engine components could be a common cause?? I wanted to add that the bike leaks no oil, does not burn any oil and runs just fine.... what in the world could it be!!!!!!