Could be 5 star with fixes
Your review: This cart is excellent for a construction supply retail store. Its two downfalls are the rear wheels near the handle are too far forward on the cart and if you put heavy loads near the handles the cart can tip up. The other minor downfall (not nearly the problem) is that the cart's handles are around 3-5" shorter than what feels natural for an averaged sized person. We have several other flat carts in our store where the handles are higher and our customers complain that the new carts handles are a little short (so do our stockers).
Pros: Carts drive excellently. Carts handles are removable to help use the truck as just a platform for larger items. The wood decking is easily replaceable, where the decking of our old metal carts gets bent and is hard to straighten out.
Cons: Handle is shorter than what feels natural. The cart can tip easily with too much weight near the handle.