We are full time liveaboard
cruisers, and I have had a Wilcox Crittendon, and a Jabsco
plastic toilet, and I think the W-C was preferable. The big drawback to plastic is that the stainless screws tend to crack it when you tighten them, even though you're being really careful not to. Once we solved
the problem of the leathers by replacing the plunger with a disc, shaped for an O-ring seal, it worked flawlessly for years. I felt sad when I learned our old one had gone to the dump, because, we'd have installed it on our new boat, rather than the Jabsco we presently use. So there you go, different strokes for different folks. Perhaps you could have had a new cam fabricated for your old one, some places such jobs can be done relatively inexpensively.
Dennis, consider keeping yours, the one we had was easy to understand, work on, and didn't require much working on, anyhow. Just my two cents.
Ann Cate, s/v Insatiable II, lying Port Cygnet