My bucket level indicator fell off on my 400x . The bolt holding the cylinder was still in place but the nut was missing.The parts person at the dealership said 3 washers were also missing, but when I put the thing back together there was no way that the washers would fit and still have enough threads on the bolt so I only installed the nut although seems it could easily come apart again as it will not stay tight. Has anyone else had this problem? The tractor is a 4520.