First time posting since I could normally find answers using search, but this time no luck searching the forums. So story goes a good friend of mine just bought a new used four winns 190 horizon that had sat in a heated shop for almost 15 years unused. The boat is amazing but the trailer is giving me problems. It has a dual axle trailer with drums on all wheels, but none of the brakes are working. Checked it out and the master cylinder was almost empty and nasty. I tried filling and bleeding but nothing would come out of the bleeder valves. So then I disconnected the brake line from the master cylinder and went to pump well it only spits out a tiny bit of fluid on maybe the last 1/8 of the stroke. Is that normal? Car brakes aren't like that. My plan is figure out if the coupler should be rebuilt or just replaced, pricing it sounds like its a push cost wise. Then im going to blow the lines out and install new cylinders, but its mostly the actuator I am a little clueless about. By the way it the 6000 lbs atwood bolt on hydraulic actuator.