I have a 2008 Mercruiser with power steering and noticed the steering was starting to get stiff when turning. I took the cable out of the steering tube, greased it and re-installed the cable. The steering seems to be OK now. The question I have is my steering cable does not have a grease zert on the locking nut. Would it be worthwhile for me to install a nut that has a zert on it so I can grease the cable with a grease gun instead of taking the cable loose to grease it?