I have an old Bently 4 string P-bass. I want to restring it B E A D instead of E A D G, but the slots in the nut are too small for the strings to fit in without the plastic nut cracking. I know this becasue I had to use a little super glue after trying. The nut split. I was wondering how I could string the bass B E A D without having to buy a new nut made to accept bigger strings, and still be able to string back to E A D G later.