The installer modified the design and eliminated proper conduit connections to keep from drilling through the obstruction. The installation had worked for a while. Unfortunately the building relied heavily on wood construction. Field inspections and prefabrication are the only methods that catch problems firsthand. Poor building design and quick refurbishes to convert a store over leave the sign installer with a bunch of headaches.
Conditional installations are the one way to go into the unknown.
Hit an obstruction, back to the shop rework and re-bend till it is correctly installed. Costs are passed on to the end user. Super Vision - LEDs and fiber optic components and kits for the sign industry.