Argosy,
I will reiterate. The RV is 16 years old and as a former repair shop owner if a customer came in to my shop with this story I would tell them how I am going to approach their repair. If they do not like my approach they are welcome to go elsewhere and will be advised to if they think I should repair it their way. The reason for this is very simple. If, and this is a BIG and very possible if, there is an accident related to brake failure the moment the customer says I just had them repaired he is absolved of all responsibility. Who do you think then becomes the care taker of the individuals injured in this accident.
Randy