Yes, I have heard of it. I figured that was what you did. The concept is valid if done carefully. That is the hitch. It is easy to disturb things while sliding the flywheel on & off. Most people here know that I used to make the timing fixtures, before turning the project over to Richard White.
The high resistance in the wire probably is due to a poor connection at either end as previously suggested by others here. But the other one checked out OK, according to your post.
My suggestion to you is remove the points from the mag plate and individually polish each contact shiny bright, then reinstall & set the gap to 0.020″ at widest opening. Resistance between points & mag plate should be zero Ohms at the lowest range on your multimeter (wires disconnected, points closed). Not a few Ohms, not an Ohm or so, …zero Ohms.
