'93 E350 Motorhome - really frustrating brake problem

I've had 3 ford vans plus my E450 mh every single one of them has had brake issues. seems like ford brakes are consistently bad. couple of times needed the brake bias valve adjusted so it would apply more power to the rear. last time I took the trailer out, fried one of the front brakes, enough to try and pull the whole rig off the road. had to abort the trip and take the ferry home. 45' of rv on a ferry isn't cheep. ended up replacing the whole brake assembly on that side.