If you have been, are going to, or are threatened with having to go to Stoke on Trent, you have plenty of reasons to moan.
Even the vague reminiscences about Stoke that this thread has bought on have made me monumentally bad tempered.
As for round seals, buy a selection of thicknesses of Viton from eBay and get a set of punches. I'm making Brembo F08 calliper seals tomorrow.