TS 55 R base upgrade

[galwaydude18@gmail.com]

I have the TS 55 R and I have been working on a site where one of the guys has a TS 55 R and it has an upgraded base on it. You can now adjust it so that 0 degrees is accurate rather than like mine you can't adjust it.

Does anyone know if it's possible to change to the updated base and if it's a big job??