Ecrf v2 and Base_Trap_M3 meaning

[Dickdasty]

Hi guys, i'm building an ECRF v2 Siboor Kit for my Trident 300 mm
I'm on the first phase and i found a lot of difficult to assembly the filament block .
I don' t understand the meaning of "Base_Trap_M3" that every time i broken when i assembly the entire block .
I tried to modifidy shape of particulars that's match but with poor effects.

This part is mandatory ? If i remove it the block works fine ?
Many thanks for help , Sandro

 

[Rcfiddy1]

I am new to this kit also. I tried to use this version but I got a lot of filament dust from grinding on that set screw. i used the older version with no set screw and havent seen any issues.