got my oak endpin fitted, I think it must be the short one in the photo above.
Solid as a rock on my Kay, no more rattling noises on stage. Soundwise theres a very subtle increase in slapping sound , and theres a big bonus of less stage noise( bass drum) being picked up. Im sure if the end pin was longer there would be a more pronounced difference in sound, but then Ben would have to make me a box to stand on.
A job well done, thanks Ben.