Windage turrets don't get a lot of use so can get stiff. Loosen 3 grubscrews as if you're resetting the zero (think they're 1.5mm) but a good 3 turns each for clearance. Pull off turret. This may be tight but try not to force it. Clean spigot, inside turret and o-ring. Grease o-ring, with clear silicone grease if you have it, just a smear. Replace.
You can do similar for the parallax wheel and also adjust the friction but it's a bit more involved so best have someone who's familiar with them look at it. I don't know about the focus ring (you mean the eyepiece?), but it may be again just stiff with lack of use. A little gentle warmth might unstick it if the grease has dried up.