If you suspect bent valves, doing a cylinder leakage test will confirm that hypothesis.
http://www.youtube.com/watch?v=WgrfT0LF … ure=relmfu
After replacing timing belts or timing chains, its always a good practice to manually rotate the crank shaft by hand 2 revolutions to make sure all the timing marks line up.
For the rubbing sound you hear, i would do a good visual inspection of the area. However, it sounds like it may be out of time.