USPS did a number on a 753 Raleigh SBDU frame I received about 15 years ago. The frame was perfect except for the driveline side dropout had now been closed up to about a 1/4" opening. I was told cold setting would work if careful. It didn't. Dropout fractured right at the adjuster screw hole.

So it sits out in the barn waiting to be sent out for repair. I'll get around to it one day.

Since you don't have the adjusters and it's stamped there's a pretty good likelihood you will be ok. Just go slow and easy. I like the bolt and washer alignment idea.

Good Luck!