NewWay also has some kits, mostly 3D printed parts. Sold by erockets. Also from erockets is a MMX rod that slips on to your current launch system. No need for a special MX system.
http://www.erockets.biz/erockets-mi...older-erk-9080/
Some kits have a plastic length of right angle. Keep it and use it to align the fins on all your MMX kits. As mentioned, tweezers and a magnifying device. I would add stay away from the caffeine.
Have fun.

__________________
I like the unusual, the off beat, the avant-garde. No 3/4 FNC for me!