I think you can drive a impact socket on the locking stud....I don't remember the size but I think it was a six point. I tried a 12 point first. Maybe someone can get you hooked up with Stu Ritter in Denver. He knows...I don't remember the size...I just kept trying them until I found one that worked...I was in my shop....I used the socker and a very short extension and a sledge hammer...good luck Jim

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James A. Harris