Update if interested. Motor number one was a smoke free runner. In keeping with my policy of "if it aint broke, don't fix it", motor was just pulled down, sand blasted and repainted with new plug and pull start.
[Linked Image]
Frame was re-welded in a few places where there were signs of metal fatigue, then sandblasted and put into primer. [Linked Image]
Bit disappointed with Greenfields though. I emailed them a week ago regarding ordering some spare parts... no reply.