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I could tell you lots about timing. The old German/Austrian motors all had centrifugal advances inside the flywheel. Set points at .015 when the motor started it went to full advance. The Japanese motors came along and we set the timing by point gap that was built in too somewhere around .060thousands BTDC. CDI motors had no way to change timing.
Is it possible that the points cam might be upside down? You have plenty of compression. The motors usually still run with crank seal problems. Not good but they will still run. Maybe your poppet valve spring is to stiff? You have fuel coming? It’s gotta run!
dale