I'm sure Gorend is similar to the other big trans vendors, in respect to if they "allow" anyone to be in their network of dealers they "have" to be fully trained and respectable. Sorry no first hand info but I doubt the folks at Gorend would recommend any of their dealers "if" there were problems/complaints about them. I'm sure someone will chime in having first hand experience with RPM. You're being very wise by doing your homework first - these trannys aren't cheap for sure to have them done right.