i might be showing my stupidity here but it would not be the first time:
could one make a stud mount bridge out of a regular "flat" type by machining a mounting plate to go under the bridge that has stud mount holes? using the regular mounting holes to screw the bridge onto the plate and if one is really picky about tolerances, then make it a "thermal press" (heat up the plate in an oven to expand it and mate the two parts) with a couple of thousandths cold temp interference?
i think a good candidate would be a Schaller 463 a small bridge and available in any color one wants, with the plate made out of aluminum and polished surfaces on the ends where the stud hole would be, anodized or chromed. the middle part of the plate would not have to be very thick and one could make the stud holes any measurement one would want.
this was just a thought i had when the Dr told me i sent the wrong type of bridge on my bass build. use close tolerances and lock down type studs to stop the "wobble".