I have bought and sold and refinanced homes for over 25 years and never had any problem at all using " worldly people" and their businesses.
The only time i tried to use a brother ( an elder ) it was a big fiasco.
Everything went wrong and i threatned to turn him in to the authority because of his cheating and lying and unethical way of doing business.
Luckily i caught it before the closing and did not go thru with it but at least 5 other families got screwed out of 1000's , money that was needed badly.
He is still serving as an elder
Did you have similar experience and get to a point that you did not want to use the brothers anymore?