I have an AX40D that I am doing some mods to. I was thinking of putting a Gotoh 1996T locking trem in. Has anyone done this. I also want to replace the locking nut. The site says it's a 42MM. I measured it and it's pretty close to that but was wondering if a 1-5 /8" nut would work? Any help or suggestions would be greatly appreciated. Thanks in advance.