in this version you don't need the steel lever instead you can use some parts from the original prusa extruder which are :1- small magnet 2-filament sensor 3- 3mm steel hex nut 4-7mm OD washer (can be printed if you can't sort it )4-push fit collar(from your E3D heat sink or the one included in LGX kit), i have included some picture for the parts.
IF YOU HAVE PRUSA ENCLOUSER YOU VAN USE THE PUSH FIT COLLAR AND FIT THE BODENTUBE ITS BODEN TUBE FRIENDLY
i have printed it in 0.25 mm nozzle and modified the sensor housing to prevent it from breaking while fitting it . also i have made a washer(0.8 mm thickness & 6.8 MM OD) which will actuate the arm when the filament push it . all parts were printed in Prusament Galaxy Black PET-G(please dry it before printing ).
i recommend buying it from the link included its only 15usd if you are planning to buy some spare parts from bondtech , if you are like me you can print it .
The author remixed this model.
edited all the overhangs to make it more fdm friendly