May sound like a dumb question but say a caster has a weight limit of say 125 lbs. If 4 are used on a rolling tool cabinet does it mean the weight limit of the cabinet is now 500 lbs? HF has the 3 inch light duty casters on sale for 1.99. I asked one of the people at the store to confirm and they said that if 4 casters are used the weight limit is increased 4 fold but they didn't seem to confident with their answer. Just wanted to confirm with the board.