I recently purchase my first tractor, a 1950 Ford 8N. The previous owner added a Paulson light front loader bucket. The hydraulics’s for the bucket was spliced into the existing line which operates a box scrapper. They both use the same control next to the seat. There is a valve handle next to the floor to switch between the two. My problem is whenever I switch the valve to operate just the front bucket, the box scrapper completely lowers to the ground. No matter what position I leave the control lever, it always goes down as soon as I turn the valve to operate the loader. The same is not true for the bucket. It stays in whatever position it is in whenever I switch back over to the box scrapper.