Ok so I had a bit of play time this afternoon so I pulled the heads off a number of these PT's that I have tested over the years and marked them as won't start. These are motors that will not give a hint of attempting to fire with starter fluid in the plug hole. So far every motor shows signs of being run on straight fuel with deep scoring of the bore with a small lump of steel at the end of the score. The motors I have checked were showing low compression so this does not surprise me. If I get a chance tomorrow I will see if I can find some of the motors that had reasonable compression and see what I find there.
