trying to rebuild the center arm in my steering up in the front bolster as it was all tied up...when I took it apart I had a hard time getting the bolt out part # 17 its a 5/8 " bolt and I see that the threads were stripped out. but the threads in the arm are fine..its the bolt that clamps the arm to the shaft and the shaft has a notch in the side for the bolt to hold the shaft in the right position..so I line the bolt up and I see the bolt that was in might have been replaced at one time because when I line it up it appears that the part of the shaft that has the notch lines up on the bolt and the threads of the bolt would be where the notch is...I would think the shaft on the bolt should be solid not threads...in the picture you can see what I am referencing to. Is the original bolt have a longer solid shaft ..seems like it should..Im thinking someone put a bolt in there other than the right one...?...If I used another bolt that has threads rubbing against the shaft it would tear the shaft up...maybe in wrong ..not sure..