[Don]

Don't know if it holds true for the V -8 but had a bad clutch chatter on my model A ,come to find out,there are large hole PPAnd small hole PP,one is 5 inch the other 5 1/2 ,,you have to have the correct disc to go woth the PP.,Just a thought.another cause of clutch chatter is the PP not having all the fingers even,set at the correct height