Edgar,
I had a good one a while back,we had an a/c set of wheels that were "as removed" every wheel came to us completely flat (as they should/must if they are to be transported via road) and whilst doing first inspection I noticed to my joy a new in/bd hub and at huge cost new I took great interest,but the alarm bells started screaming,there was something badly wrong with this set up,I ordered one tie-bolt to be removed and to my astonishment we had a complete miss-match of hubs,the o/b was a very old item that uses small diameter tie-bolt and the in/bd was the latest type hub that uses a large diameter tie-bolt and the whole assy was held together with a set of small diameter tie-bolts and what was worse this had been in service like this as the tyre was worn to limits! both hubs were immediately marked for removal from service and defaced and scrapped.I had a audit from the CAA and they made a comment that they liked the fact that all of the tie-bolt from wheels in for service/overhaul are kept in purpose made wooden blocks to stop any further damage.We have now also had to make soft cases for the bearings whilst they are out of the wheel as these are also very easily damaged.