New holland LS180 bucket tilt issue

I have a 2003 NH LS180. Recently started having issue with bucket tilt pedal. When I push forward on pedal, the 4 in 1 bucket opens on me. I have to kick down hard on heal ofpedal to stop it, even with regular bucket on, when I tilt bucket it seems hydraulic fluids are not just supplying tilt. I assume in the valve body something is getting stuck open and fluid is feeding both tilt and aux hydraulics. Could this be electrical or internal leak in valve body? Any help would be appreciated.

New holland LS180 bucket tilt issue