I have had spring problems at the 27 month age of my Prowler AX6.
I have change to 4,000 lb springs and 8,000 lb axles.
The frame has had no problems and the pin box frame is fine also.
The 5er has about 25,000 miles on it. The brakes are fine I hardly use them when pulling with my MDT, Jake brake,Alison 6 speed all down shifting together and slowing down the 31,000lbs very well.
Larry & Kathy
Fulltime June 2000 SK#82498
Our Home is Where we Park IT
International 4700 Low Profile 530 power:Full Air Ride
Prowler Regal AX6 :Trail Air pin box/spring over axle: Verizon internet: 2 Verizon cell phone