Stan,
Hey, we are beginning to communicate, eg information and understanding are flowing in both directions.
RE the traps issue you must also consider that some states and local regulatory agencies have adopted a "protect the consumer at all costs" attitude which makes it almost impossible to gather a reasonable construction for profit company and keep it alive. Ask the guys from Texas about recent state law changes.
Many well intended "new" regulations do not consider the limitations and practicability of systems/materials. These limits place a guarranty burden on the builder which implies everything will last forever. I once had an experience on a public project with more than one boss which ended up creating a theater (read barn) which computed to accomodate a 4' snowload, a force 5 hurricane and a richter siesmic event of scale 6.5 concurrently. How unreal is that ? This, on investigation, was fostered by the local community authorities paranoid about being sued and not being able to afford the insurance premiums. Finding balance between what can be done and what regulations seem to require is a constant challenge.
What are you going to call your high precision custom designed manufactured homes ?
If the cost to build can be kept down you just may have a market to satisy local community affordable housing targets.
good luck.