Rags.......
If you ever run into that problem again, removing the PTO or Mag flywheels, that's what the forum is for, asking........
I havd an old trusty, standard gear puller I used in removing the mag flywheel. Here, you have to be careful, since most want to remove the armature of the magneto stator to get the nut off. If you do, I hope you marked it, because that is the only true "hard" timing this engine has.
To remove the PTO flywheel, you have to remove the exhaust manifold first, then, with the piston on the down stroke, shove a shop rag or two inside the compression chamber. Then, as you turn the PTO with a pipe wrench (careful of the zirc fitting), the rags will jam the crankshaft from moving. Then, with a little elbow grease, it should pop right off.
I do agree with you on the Loctite. A little heat will break that bond though. I keep one of those cheap "Walmart" special butance torches in the shop, just for that stuff (oh, and the kids like to melt glass bottles and stretch the necks..LOL...).
Good luck with the new motor!.........:cheers: