Just bought this boat, 1989 4.3 Liter Cobra set up and it's hard to turn steering wheel in either direction. I greased the fitting and put OMC grease on the piston. I also snuged up the power steering belt that was very loose but with little results. I've been reading in different forums here on Iboat about a corroaded tube in the steering cable assembly that needs to be taken apart and cleaned. My question: is this very difficult to do? Details on how to do would be great. Regards to everyone