Master Tow dolly problems

Have you considered towing 4 down, requires new toad. Have you considered retrofitting the trailer with boat trailer lights from Walmart, submergible and better built. Next time you replace tires have the wheel bearings maintained. 1.75 inch clearance on either side of car seems tight, the tolerance in vehicle suspension movement, trailer suspension movement and your accuracy in aligning may be suspect. Have you considered lying to Master Tow and suggesting that you want to buy another dolly from them but you've had these problems and want to know how to avoid them in the new purchase.