I bought some Sunlu filaments - 250 g, not realizing the mini spools had a smaller 42mm diameter.

I did not want to respool.

I made this adapter cap (actually 2 pieces) that uses the AMS lite spool holder.

You do need to take the claw arms off and the bearing base.

This file will print the cap for the  hollow cylinder that the spool base will connect too.  Depending on spool tolerances the printed cylinder may be a tight fit.  Then the internal spool holder drive goes in and clips back onto AMS lite unit.  Be sure you know where yellow and green go.  Then the printed cylinder (no slots in final) uploaded  also is what this presses on to the end of.  Not the prettiest as I'm sure I could tweak it but it is working well.

I just realized this file is for 3 caps.  Email me if you want a file with a single cap.

I did buy another set of spool holders for  ease of switching to regular spools. 

Sunlu mini spool ams lite adaptor