Here is my 58mm mod, basically I wanted a less fat Minichamp. I call it the Diet Minichamp Built from a Signature, Jetsetter, and Cavalier. I used 1/16 brass rod as a replacement for the stock 1.5mm brass rod (close enough) and likewise a 1/16 drill bit to drill them out. Creating a jig out of a scrap block of wood is essential or you will hate yourself trying to circumcise a mosquito with all these tiny parts lol. Having a rivet setter is also helpful. Also tape it closed with painters tape when you are drilling the pins out bc everything will go flying. Donor kidneys On the jig Collars removed and pins ready to be drifted Assembly Checking for gaps After you put the collars on one side put some tape over that side so when you flip it to add collars to the other side they dont fall off This is my Diet Minichamp. I wanted all the thin tools on one side so thats why the nail nicks dont perfectly line up. Oh well works for me. I really want to do some more mods but next time with Alox scales. Those are actually easier because you don't have to mess with collars.