Hi Shane

I have 35mm straight set on my TDF and tried to re-create the problem from Revit to fabrication but mine came out correct length

I use CID pattern 866 for my straights

I don't normally use dynamic holes but even switching this on all lengths came out standard with or without a tap connected

Unfortunately that's about as much help I can offer you but i will keep thinking if there is anything else i could suggest to help

Thanks