When I apply the brakes I notice the truck & trailer feel like it's bucking especially when slowing between 30 & 20 mph. I took the trailer into a shop about a month ago because I noticed a brake line had broke going to the left wheel. At the same time I had the oil filled bearings replaced and refilled, and a rotor turned. When I got it home I noticed it was leaking brake fluid up front at the actuator. I called and they asked I bring it back in. They said the Master cylinder was leaking and needed to be replaced. Got that done, brought it home and it's leaking again up front by the actuator. Called again and said they may have over filled as it did appear to be leaking out around the cap. So I removed some of the fluid. Well, now it doesn't appear to be leaking, but it bucks hard when the brakes are applied. Now they telling me the dampening shock could be getting weak and they want $44, plus shipping and labor to tear down again, and for the third time charge to bleed the brakes.Anybody have had this experience to tell me whether or not I'm being taken for a ride?