Or do what myself and many others have done.
Do away with the troublesome lead terminal ends and replace them with copper-lug-ring-terminals.
You can crimp these on your existing cables, without removing them from the truck.
To use these on your present batteries, simply clamp on a set of marine-style battery terminals that adapt post-type batteries to accept the ring-terminals.
When you are ready for new batteries, replace the post-type batteries with STUD-type Group 30S, or 31S; they will fit the carriers with no modifications.
Of all the many modifications and improvements I have done to my truck, this is by far one of my favorites.
There are several informative threads on this, both here, and over at the drama stop.