Sounds like the snowball is just starting to roll down the hill.
I've never had one of this type of project that did not turn into a snowball. Its that "While I'm there I might as well..." that always gets us. After its all done and you get years of trouble free service out of it, that snowball stuff was worth the effort.

You just know if you don't do it now, about a week after its back together you will need to do it.