As a side note, I had previously done a timing chain job on this truck and replaced the guides with EB's kit. The drivers side rail is metal, but the plastic passenger side is the one that broke this time around... after only 20k miles! What's up with that? Damaged chain tensioner? Or hey, maybe the mechanic who pulled the head apart to begin with broke it intentionally just to screw me over. I wouldn't put it past him... <img src="/forums/images/graemlins/angry.gif" alt="" />