Mimaki jv150-130 Take up mechanism moaning when vinyl attached

Started last week...this moaning sound. If I push in on the turning knob it stops, but the moment I release it the sound starts again. It sounds like its a bit loose to the takeup roll but if you increase the pressure it gets louder and if you reduce it to go away it stops winding the vinyl.

It's not anything major but the sound is very annoying especially if you want to make a call.
anyone had this issue?

not sure how to fix it.