Re: Reading F350 overload springs for a 9'6" NL, stableloads

The sticker payload is mean less with TC - you need to weight rear axle under the load and compare it to ratings.
Your pattern looks like your upper overload is barely working.
If you are comfortable with handling, that is all that matters (assuming you did not overload rear tires).
I added hockey pucks to my upper overload only to be on safe side, aka when I'd be forced to drive with filled-up rear tanks.