Gil,
           many years ago Bob Hunt did an engine article in "FLYING MODELS" magazine about modifying the WEBRA 32 and OS 32F(not sure if it was the "F"version). You probably have that issue in your collection. Probably over 20 years ago. I think Bob was using the OS 32 in a B. Mackey "LARK" and Werwage was using the WEBRA 32 in one of his Classic designs. Maybe Bob can chime in about it.
           Doug