Member - George (WA) replied:

If you have a constant heavy load, I would be inclined to beef-up the springs for a permanent solution. Air bags are good if you only have a load at different times. Then you can inflate them or deflate for a more comfortable ride as required. Just my opinion.
Cheers

Stephen M (NSW) replied:

Hi there B Jammin, I would also be watching the rear chassis rails if you continuously carry heavy loads as they are known for bending then cracking. Regards Steve M

customline replied:

I think you would be better off getting the springs RESET and one of the best in that business is RAM springs in Thomastown Melbourne .He is an owner operated business located at 15B charnfield crt ph(03) 9466 4193 .Tell him Graeme sent and he will look after you I promise.

Member - Effie C (ACT) replied:

B Jammin
Had the same problem with our rodeo, had tjm rear springs installed (the ones for carrying constant load) and it is all OK now.
Also had the greasable shackles installed at the same time.