Okay, I've been reading the X-Kilt manual for the last couple hours and I have a question that needs clarification. I see the diagram of the cross-section of the box pleats. That diagram indicates 5" of fabric for the inner portion of the pleat (1.25 x 4 = 5.0). However, everywhere else in the manual, it references 5.25" as the inner portion of the pleat. Is this a known discrepancy, arithmetic error, or am I missing something fundamental?

Any clarification would be helpful. Curse my perfectionism!