Regarding the Power Director (hand clutch), the "creep" you describe is normal. It could be slightly out of adjustment, but this usually occurs when the tractor is cold. As the cold oil in the Power Director circulates, this causes a "drag" between the clutch discs, making the tractor creep forward. After you drive it for a while, the oil warms up and the effect lessens. This is why you won't notice it as much in warmer weather, or after the tractor warms up.