Given the number of these locomotives that are preserved (76 if I have counted correctly and the information to hand is correct) there will be more than one of this type needing a new block and indeed this is the case. A glance at Branch Lines for the current month shows that the Mid Hants is working on obtaining a block. It might be beneficial to make contact with all owners of this class of locomotive because cylinder blocks coming to their end of life is a reality and will become more frequent until a significant number of new blocks are in service. The cost saving per unit in having a batch produced could well be attractive. Getting enough cooperation to allow this to take place is another matter.