Okay, it doesn't matter what has been done before by whom. I have the tractor back here and I'm starting as if nothing has been done/checked. I will NOT be taking the head off to "look at the valves".
Compression is approx 100 (meaning 98-103 or so) on each cyl - cold, dry.
Battery at 6.2v.
Clip jumper from hot at starter to clip on other side of tractor for use as needed when needed. (Points are open on distr.)
Two different coils tested, not attached to distr: 6.2v negative post in, 6.2v from tower, 6.2v positive post out.
(Please confirm that the coil for a positive ground tractor should receive battery power on the coil's negative post and should send power to the side post on distr from the positive coil post..................)
NO voltage reading from either coil when wired positive post to side post on distr.
Points and condenser checked. New points and condenser checked. No voltage reading on side post of distr. (Sounds like a solid short in distr now???)
Points set and checked at each of 4 lobes of distr and steady at .025.
New copper tab and insulator previously installed on side of distr. However I am concerned regarding the paper thin (maybe paper) insulator inside the distributor between the copper tab and inside wall of distributor????