I haven't seen anything wrong with the frame other than the mentioned outriggers. I did have to remove the underbelly cover and fix the fresh water tank support system as it was sagging up to 2" when full and one cross member had a broken screw. I agree though that in general the trailer is quite good on build quality and I have been impressed (been living in it over a year now and no problems so far other than the mentioned). The outrigger and fresh water tank problems have been weak points for many of the earlier Cruisers. Hopefully they have correct these problems on the newer units. I considered getting a new set of bare 6k lb axles and the price wasn't too bad but I really don't need them right now as the trailer is home at this time and is stationary and skirted. If I ever need to drag it around much I will have to fix the axles for sure. My rough measurements show the wheels are towed out, which is why the left rear is bald on the inside now. Much of that rubber came off between OH where I bought it and UT where I live.