I noticed the loader control for the tilt of the bucket was harder than normal to actuate. The up and down is perfect. When inspecting the loader the pivot points on both sides have worn through the orange paint and there is metal to metal contact. When I checked the hydraulic fluid with the tractor running there was none on the dipstick. But when I shut it off and lowered the front end loader and checked again fluid bubbled out of the dipstick hole for a second. It was slightly foamy. Any ideas as to what's causing the binding and fluid issues?