APT employees in the UH system?

Hi, just wondering if anyone here can share their experiences being a longtime APT employee at UH?

I’m looking at the salary schedule, which has such a large range between step 1 and 48. So far, I haven’t met many people past step 10.

Have any of you made it to the latter half of the salary schedule? Curious to see what it takes, since even advanced degrees don’t seem to warrant much more pay.