Not saying that it's ok for a vendor to blow you off, but you are really asking a question that is purely personal preference and really is outside of a vendors responsibilities. If he gives direction on something like that, and a wire burns, he may feel he would get into a warranty claim for something he shouldn't be responsible for, so I sort of get it.
With that said however, I try to make a point of always going back to vendors that help out. My list of Guys that have given me great support and I will always go back to:
-Calvert
-Cass at Dr Diff
-Paul Forte at Turbo Action