There were at least three series of the ASP, The first version is the one I have thet just Engines/UK does not have parts for any longer. They may have the other series parts. Worth an email to them to find out. The early (at least) ASP were clones of the OS FSR (I think), so maybe the head shims for the OS engine would fit? Soda or beer can aluminum is very thin and easilly cut, but also pretty high temper and may not be soft enough for a head shim. Thin annealed copper would work, as well as some of the dead soft aluminum that is used as tape for air conditioinig duct work. Printers alluminum offset press plates are thin and easilly cut, but are alo high temper. Couold the can stock or printers plates be annealed to a soft temper by heating? Comments?

Regards,

Richard