Have 28l-26 tires on rear and impossible to steer when not moving.Makes topping off a truck next to impossible for my girls.Dealer says this is normal. Pathetic on Deeres part I think. Anyone else having trouble with poor steering? Also the moisture meter keeps stalling. Blanks out both Y+M when this happens. Put 2 new units in and still does this. So much for yield maps? Dealer says its a circuit board problem. Anyone else with this problem?