Hi Mitch!
You hit the point: the saddles move side by side, because the are no troughs on the bottom plate.
I'll try to set the saddles perfectly parallel to the bottom plate to check if I could solve the problem, but I think it's a structural issue of the actual bridge.
Thanks a lot!!!
Anytime. Just try a bridge with the troughs
Those are a few nice basses too…
Cheers