Thanks. In fact I did that for about three months and it got me nowhere. I took the head off and found the sleeve in number four was badly rusted. The sleeve felt pitted -- it seemed unlikely to me that I could simply hone it. I am hoping to find a few parts (sleeve, inserts, rings,) and simply try to repair the damage. Failing that I would like to find a replacement Red Diamond engine.
Do yo know of a source for parts of replacement RD engine?
Thanks again. jim