Mounting Rumble Lid Hinges; Where Did I Go Wrong!?

[40-A Twins]

Happens frequently using repro parts. Drill to match, bend to fit, hammer where necessary, weld to suit. Back when these bodies were built, parts were sent to an assembly shop, and when things didn't line up, some floor manager called the supplier and complained and they got things straightened out. That feedback loop does not happen with repro parts.