Megado - switch block keeps coming loose

The switch block needs to be snug in place - but the small plastic nuts are hard to tighten sometimes.    If your plastic nuts keep coming lose, try using “Loctite Threadlocker Blue 242 Adhesive.    This should allow you to tighten the nuts but still remove them if needed.

In recent, 2021, dobby interfaces, the bolt that extends from the switch block, sometimes loosens.   In this case, take the spring that sits between that extending bolt and the base and put it over top of the extending bolt as shown in this image.