I won't be much help but as I understand it there are two sizes and muggins managed to get teh wrong size. The difference is very small but enough to mess everything up.
I'd suggest taking the prop to your local indepednet and see what he suggests. Failing that measure the external dimensions of the yoke post them here and I'll do the same - mine was in fact the larger one that has longers legs on teh spider.
If teh question is actualy about makes then I think Hardy Spicer are theough to be the dogs nice bits.
Mike
