Well finally got my duster back to the track after trans failure and I somehow ended up with a broken timing chain. Ive never seen that one before looks like I may have gotten reletivly lucky I can only visually see 2 bent valves. Has anybody experianced this or have some I dea what may have caused it The chain was a sa gears roller with 9 key ways and a torrington bearing in a pretty high reving 512 (7000 rpm) any recommendations as what to replace it with?