Try Ian Pearce at Sam Pearce and Sons
Regarding resleeveing, it can be done Colin Heath and I successfully raced resleeved barrels. This allowed us to use scrap barrels and change the porting .
By breaking the skirts off you save some time!
If you want to chat about it give me a call on 01628 891507 evenings. I’m sure Colin will have the drawings of the liners he had made.
However, It is a lot of work and it’d be a lot easier to find a sound block.
Don’t bin the broken one just yet!