I have a 2001 2WD workmate that can't move from a standing start on a wet day. The lack of traction on the rear wheels is frightening, and would be dangerous if I ever needed to take off quickly. Going uphill on worn asphalt I can spin the wheels in 3rd doing 40km/hr. The tyres are almost new; they are not the cause of the problem. I am assuming this is because there is very little weight over the rear wheels, but aside from welding 500kg of steel weights over the axel, is there anything else that can be done to improve the traction of this vehicle? Is there a standard modification? This is a great car and I don't want to have to sell it because of this issue. Thanks Dave