Bill and Ben

We've delved into eBay for the latest locomotive purchases and bought 2 old Lima Class 31s. Now they are very crude compared to modern locos though they do both work however they wheel spin like crazy and some new traction tyres are needed. Hopefully one can become a regular loco on the layout or at the very least give me some experience in modifying and improving rolling stock. Something i don't really want to do to my new stuff, especially the locos, as they are just too nice straight out of the box. The 2 31s are identical (so one will need renumbering at some stage) and i call them Bill and Ben!