It happened on my '54 Manhattan last year too. The base cracked so the bolt did not hold the base in place and it would turn, and I was told it is very common. I just got help locating brake drums for my car in another discussion, so apparently Larry Barker is the mannnnnn for parts! I bought a base for the distributor from Larry (The Kaiser Store), you do not need the entire distributor. Call him at 602-468-1403 or cell 602-373-1456. You will need to paint it (I still need to do that). Larry gave very prompt service, too.