Just picked up a brand new Fleetwood Sea Pine and I have a question about brake lock up. My TV is an 01 Silverado with a Tekonsha Prodigy. I cannot get those PUP brakes to lock while doing the set-up for the controller. Dialed up to a full 12 and pull the lever to the left and no lock. Now it does pull back on me (so it does brake hard)....but I can't get it to lock up. Do I need to adjust brand new pop up brakes? How would one set up the controller at this point?