I have a Zieman tandem axle, the only bitch I have is the Drom brakes. The brake cylinder corroded, (in fairness due to a couple of emersions in salt water, and froze the pads to far out so the drum etc. was toast. Also mine was painted not powder coated so joints are weeping a little rust. Swing away tongue is nice and it pulls fine. New ones may have disk brakes but check.