Backing Plate Differences

Dana67Dart said

Could be for BBP 7 1/4.

I was told 7 1/4 and 8 3/4 SBP 10 X 1 3/4 would swap. The photo posted proved otherwise.

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Yeah...I thought I looked at hole sizes but maybe I didn’t. It was a BBP 7.25. I’ll measure it when I get home and see if my cheese is off the cracker again.