Yeah, you really need to ditch that zip tie if the current build guides are still suggesting that as the mounting method. A better method is to use bolts and nuts to mount the switches to the wood brackets. Switches can vary, but mine were sized for M2.5 screws. Others have drilled out the holes in the switch a bit to fit what hardware they had. Countersink the back side of the bracket so the screw head recesses into the wood. Put the nuts on the exposed side of the switch.
Pics from my install are in this post -
Enstop Installation