Been on this one all day. Have a Kawi FH580V that shelled the governor (guide plate melted). Installed used parts out of a junker I have in the shop. The used parts were in good shape, the alignment pins weren't sheared on the guide, the governor plate was still in good shape, ball bearings were fine. So now I can't get this thing to NOT race. I have re-set the governor arm on the shaft, completely tore down and cleaned the carb with my bucket-o-cleaner and shop air. I did perform a leak down test on the engine, and I am at about 35-40% leakage, but it just seems like the governor is not working at all. Just looking for suggestions.