After doing some measuring with calipers, it looks like although the p plate shell was still bolted on center, the heavy friction disc was pulled about 284 thou off center . Over a quarter inch off balance.
I'm not 100 percent certain but pretty sure I solved it.
McLeod SUPPOSEDLY put this set up together for my combo. Less than 20 miles on it.
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So thanks to all who helped out and kudos to ole j par for getting my brain in the right direction!