I'm helping my father out. His Sheer Bolts were both toasted. I purchased some replacements and first one, no problem. Second one is another story. It appears that he ran it while it was sheered and I can not for the life of me locate the hole for the new one. I did do a search here and tried the q tip with a light thing but I still can not find the darn hole. Is there a way to remove just that one shaft or do you need to remove everything just to get the shaft out?