Ok so i had a reply from the seller on ebay regarding the spindle and he has said to me that the spindle on has 3 bearings - the one he sells with 4 bearings is considerably more expensive. Does 4 bearings over 3 hold much of a difference in terms of robustness or would the 3 bearing suffice for my needs - can the bearings be changed in the future if they were to deteriorate.

Thanks

Alex