CR-10 leveler, fits to most of m4 threaded bed levelers

When I tried to print and use the famous leveler from below,
https://www.thingiverse.com/thing:2603493

I encountered couple of issues; a little bit hard to remove a support, and very difficult to put the original leveler into the printed leveler.

So I designed a similar leveler that needs m4 threaded nuts like below.
https://smile.amazon.com/uxcell-Female-Knurled-Threaded-Embedment/dp/B01IYWV8Q0/ref=sr_1_4?ie=UTF8&qid=1541546767&sr=8-4&keywords=m4+insert&dpID=51ORvynzkmL&preST=_SY300_