Thanks very much for your reply. It is from 3rd to 4th , the clunk is from the rear and much different that the 2nd to 3rd (which is smooth). Is the accumulator piston, valve body adjustable ( I have the pan off now for a new gasket) and if so can you tell me how to do it or where to look on how to do it.

Again I appreciate any help and am grateful.

Thanks,

Lance