Back from Bassil's, they didn't have anything that was an exact replacement - in stainless or steel. So, the more I consider this, I may just go with the screw/nut arrangement...something I didn't like when I removed the screw to take to the hardware store was that I noticed the center screw is angled - in the wrong direction, towards the headstock. That means there is torque from the tensioned strings pulling on the tailpiece. I can't say I can see that it has moved, but, well, stress is stress. I need to evaluate all this but I have to gig this entire weekend, so..early next week.
Harald, good luck with screw remains extraction and here's hoping the new ones work well.
Michael, I'll have to come pay you a visit. I'm close to Adams JH.