Bit of a long shot. Has any one experience of the the New Holland/Manitou fitted with a manual joystick with the boom and 3rd service on electric buttons to pilot solenoids. The electrical part seems to have gone haywire. The boom in/out will work but carries on after button released for some time and seem more fierce than usual. The 3rd service will not work either way. The boom in/out movement will stop instantly if a 3rd service button is pressed momentarily. The third service will work in a similar way if I swap over the solenoids. It happened a couple of years ago and a local indi sorted it but he can't remember what they did.