Right front caliper hangs up

I would look at the caliper slides first, make sue they are lubed well and caliper moves freely on them. Next would be to see if it is the caliper piston freezing in the bore, or if the hose is collapsing internally. When the caliper is hanging up, jack up that wheel, and while spinning the wheel, if you can, first wiggle the brake hose to see if it frees up at all. If it does, the hose is collapsing. Next would be to loosen the bleeder screw and if that works, it is probably the hose. Look to see if the rotor and caliper are bluing, and if the caliper piston dust seal is burning/ cracking. If the releasing of fluid pressure from cracking the bleeder did not work, it is definitely the caliper.