My Extol van has had problems with it brakes and my local garage had huge problems in getting rear brake cylinders and shoes. Many they obtained were incorrect and the problem they reported was that they had not found a tandem cylinder for the drivers side as it serves both rear cylinders with a bleed nipple on the passenger side. normally I do the repairs myself and this configuration seemed normal to me. After 12 weeks, yes 12 weeks I got the van back and found that they had rebuilt the rear cylinders rather than replacing because they could not get the cylinders and hadn’t bled the rear brakes so they were very spongy. This I have resolved but wondered if any other owner had found problems in getting correct parts and in particular these rear brake parts and could recommend a parts supplier for these great little vans.