If you¡¯re going to use the fine feed attachment on the U3 milling head you will need to be able to fit the additional small cog (part of the fine feed adjustment) onto the lever.
The cog is held captive by the short end of the thin ¡®handle¡¯ locating in a slot in the cog. You would have to examine the lever in some detail to get that correct.
Just something to bear in mind if considering manufacturing the lever from scratch.
