JEM 6-str Tremolo Block fits on 7-str Trem?

[Metallion]

Are the TREMOLO BLOCKS on the 6-string JEM Edge (or Lo-Pro) tremolos interchangeable with the UV 7-string tremolos?
Do they have the same center distance of the outer screw holes?

Did they have 31mm Tremolo Blocks on the original FP77 Edge trems, or what?

[Rich]

All Edge or Lo Pro blocks are swappable between 6 and 7 string trems.

Occasionally you will find some odd length [wrong] blocks on some of the 6 string trems.