The spindle on my Pocket NC (V2-50CHB) seems to be loose. I am able to pull the whole spindle out of the collet on the machine - see pictures below. I can also rotate it pretty freely (which makes locking and unlocking the collet difficult). It previously has not been this loose. Around the time it started I’ve also seen some issues with the z-axis.
Is there any way I can re-tighten the spindle so it stays in place?