there is no shame in not being a sunderland fan
hat off to steelie for going the extra yard with the research, sounds exactly the sort of buisness you should be looking for
im one of the old skool mechanics too, someone like yourself i would spend as much time as it takes to run you through the why's and wherefors of what im doing/need to do in plain english...then once the problem is known, give you all the options available to get it fixed..anyone that doesnt wouldnt inspire me with much confidence in they can be trusted/honest
best tip is ask as many questions as you feel necessary....the moment you feel the wool is being pulled over your eyes...walk away..
hope you get it sorted