Here's the now completed stay/blade to drop out fixture. I placed the just finished (for now, till I see how the tire/rings interface...) chainstays and they sit very well in this new fixture. Unlike the old one there's no slight offness between the two sides during set up. I suppose I could have tweaked the old one to better situate the blades/stays WRT the drop outs but making stuff is more fun.
So anyone want the old one? The beam's center sliding extender (.75"x.058" wall tube is what I use) would have to be made, I'll toss in two M5 binder barrels and you provide the rest. $25 plus shipping. The new one took about 5 hours to make and I suspect the old would want a couple of hours to get going. Andy