Based on your input and other suggestions I am receiving all I can say is that Commander people are a creative bunch. I have removed the tabs, rods, and stuffing boxes and I am impressed with the quality of the original design and construction. Also I never cease to be amazed at how a metal (silicon bronze) can survive 40 years in salt water spiced with a fair amount of stray electrical current. I like the built in (cast in place) fiberglass wedge idea and it is on my list of options.