I have always built my own boxes, bottoms, and tops. Since the last time I built boxes, I've learned that because of SHB, frame rests are no longer being used. The plans that I've always used specify that there is a 1/8" allowance for frame rests built into the design. So now I am wondering if I should lessen the rabbet for the frames by that 1/8"? But if I do that, am I going to upset the bee space of the box design--will I have 1/8" too much space between my boxes?

How do folks handle this? Or is it even anything to worry about? Thanks for any and all input!