I would say it is from somewhere in Europe, France, Germany etc. Possibly Bungartz, Siemens, Stuab. It might be worth having a look through Michiel Hooijberg’s website
I don’t have any information for the JAP engine. The workshop manual for Villiers Mk 10, 12 and 15 gives a cylinder head bolt torque setting of 220/230 lbs inches. The crucial part is to tighten them evenly.
New insurance/membership cards for 2023 year have arrived.
All renewals received so far have been processed and membership/insurance cards posted today.
John-e-w, as per my previous reply. There is no auto renew, I posted links to the help page where there is a link for anyone having problems and if that didn’t work I advised you to drop me an e mail (for an invoice to be issued).