3-Point Hitch 3 point arms only working when...

[freder3423]

I was working with my disc yesterday on my 2016 workmaster 37 and everything was working fine then all of a sudden my three point wouldn’t go down. I started messing with the control valve and it went down, but from then on I had turn it out a touch every time I wanted it to go down.
So it would be stuck up and then I would touch the control knob an 1/8th it a turn and it would drop to wear I wanted it to go.
Any thoughts on that? Only have about 100 hours