That sounds like exactly what I'd expect from all of your examples, but now to the important question: how do they RIDE? Cause even though the Peugeot has the sloppiest craftsmanship, I would bet it's not the worst ride in the bunch, and there are readers of this forum who would actually take THAT bike over all the others, well maybe not a 1980, but... Nice that you got a BJ from the early years when he really was making works of art...you could TRY to clearcoat the bare metal, but most clears will not protect well enough to prevent rust "spiderwebs" from eventually forming, though I might try for a clear Imron or powdercoat, if such exist and especially if done by a pro right after blasting before moisture can be trapped.