A couple of years ago varies organizations were contacted to try to find Mk2 Shack /Lanc wheels. It was known that two or three museums had acquired the remaining stocks of Shack spares when the MOD sold them off. Sadly, I believe that any wheels found were in such poor condition as to be unusable. It may well be that with a number of MK2 Shacks as well as Lancasters still around there is ready market for these wheels. That just leaves the issue of tyres and brake bags.