as some of you know im in the process of installing a new headgasket on my car. im almost done but im having trouble installing the tensioner back on the motor. the bolt that i think goes on the left of the tensioner(power steering pump side) wont thread in all the way...it goes in fine and then stops and leave about 1/4"-1/8" of bolt sticking out. am i using the wrong bolt or something? does someone have a pic/description of the bolt? the one im using is black and uses a 1/2" socket. thanks much.

anyone?? i need to try to finish it tomorow.