Hi,
You are dead right about them being a money pit, BA, BSF Cycle thread, Whitworth, UNF, UNC, Metric coarse, Metric fine, are just a selection of the thread forms that I found,
There is a good website,Thumperpilots, for CCM's particularly to see the model changes from 73 onward ,although most have been modified from their original form.
CCM Britain can still make you a new CCM if you're are serious about your VMXing
cheers and good luck