Took our SeaRay 180 out for the first time this year, and found that the steering was extremely difficult. At first (once in the water with the engine running) it was impossible to turn the steering wheel. The power steering pump was full, and I was able to eventually work the steering wheel back and forth and we were able to get out in the lake. However, the steering is still somewhat difficult. Should I start by replacing the power steering pump or does this sound like a cable problem possibly originating from the steering wheel area? AND - will using the boat in this state cause damage?