I also have a ton of weight. The kings and spacers weren’t cutting it. So I just now replaced them with used oem non-ahc springs and I’m back in spec.
If anyone is interested in the kings and spacers, hit me up! I’ll put an ad in the classifieds when I have some time.
To support the added load of steel front & rear bumpers, I’ve been running the kings & Ironman spacers (plus torsion bar adjustments) for a few months now and pressures are all in spec.
I sold the springs. Still have the spacers. Shoot me a DM if you want them.
I found that it worked fine and was in spec until I added kids and dogs and all the camping gear like extra water and all that. I'm happy with the regular springs now. I've hauled a 3000lb boat and all the gear and no trouble. I don't think I could have done that with the Kings and spacers.