Check out the link that Jd2-98s posted. It shows how to hold the cam with the wrench like I was talking about. Leaving the sprockets loose, lets the sprockets turn to get the slack out and the proper tension on the belt. After you get it set tighten them back up. The crank pin I am talking about, screws in the block and the crank rests againest it to make sure you are exactly at TDC. It is a good idea to replace your tensioner and idlers while doing the timing belt job. If you will give me your email, I will send you some good instructions. It has good pictures. You can PM me if you don't want to put it on this page.