I just went through this with a guy who is building a new house.

He wants a panny in the house with 16 drops for v and d. I gave him the price to do the wiring and got the same old story.

I said OK, you have the ec do the wiring,
BUT after that you have 2 choices;

1) I inspect all the wiring before the walls go up and charge $300 per inspection

2) I install the system WITHOUT any warranty from me. If something doesn't work you deal with the ec or the mfg.

I took pictures of all the problems and e-mailed it to the guy. I am on my 3rd inspection!

I may not have made any money on the wiring, but I am making it up on the inspections and I can GUARANTEE that the EC will either NEVER touch telephone and data again or he will learn to do it right!

I am TIRED of being the NICE guy and ALWAYS being the one who has to eat it all.
Besides, it doesn't matter HOW nice you are
if there are problems when you get there the customer NEVER believes that it was wiring. It's the "cheap" phone system you sold them that is the problem. You bust you balls, lose money and you'll be lucky if the guy doesn't bad mouth you or your product in the end.

Corwyn