Garry's Mod

Garry's Mod

Tank Track Tool
Help, the caterpillars are falling through
https://imgur.com/a/qjtSimM
every time I put entity sent_tanktracks_auto they become normal, but as soon as I move the physical gun or touch the cube in the center they fall through, also if I just put a button and connect the tracks to it and start driving, the tracks will spin but will not move, like this to correct?