I don't really understand your problem, but I'll say this. Modular homes are scary to deal with. The only advice I can think of is to find a dealer with the most experience and best reputation. That doesn't do you any good, but maybe someone else reading. I do alot of work in the legal/business field and the contracts most dealers make you sign pretty much give them all kinds of flexibility. I was helping my aunt buy one, and I could never feel comfortable signing a contract like that. Your attorney will need to find a expert in this field willing to testify against the "builder" that it's not a normal procedure on a properly installed unit.