I agree. We swap parts all the time. OS carbs on ST-3000. TT parts in an OS engine. It is part of the hobby. At heart, most modellers are fiddler. We repair and try to improve. So, a few WREN parts in a JJ was bound to happen. AND, Sara should be happy that, in her view, higher quality parts are replacing lower quality. Wouldn't that make it safer?

DW_Crash