I thought I had it fixed but the timing is still creeping on me. I just can't get a good enough bite on the retaining bracket. The problem is that the base of the distributor is taller and totally smooth so theres not much to bite. Since it puts the hold down bracket at an angle theres even less. I ground on it a little(it is a chrome one) to level it and put some hash marks on it for bite but my distributor will still turn after a few runs. I even called MSD and suggested that they put a surface on this so its not so smooth and they will probably do that someday. I can turn it by hand with the nut tight and I mean tight. Any more tighter and part of the nut will stay in the block while the rest flies off into space. I wonder if the stock type bracket would work any better?