No, but you did force me to take a closer look back there, and son of a gun if there isn't an issue...I can see light under the bridge on the G string side...like it's slightly bent upward. It sits more flush under the D string saddle, but I think that's where the bend stops. Yeah, pretty sure there's a bend in it. That's totally got to be the problem, no? But how the heck does that happen?!?this may be a total longshot, but with the HMV, the back part that holds the intonation screws is a separate piece and is fastened to the base plate. could the screws/fasteners that hold it on be loose and cause an issue?
Anyway, I think we have finally solved the mystery.