Dunno on your trailer, but my 2019 Rockwood has auto adjusting brakes, which is new to me compared to my old 2003 Prowler..
On the drive home, it didn't seem to brake all that well. Raised my gain to 10, but only traveled about 5 miles home (yes, my dealer is only 5 miles from my house)
Read the manual for the axles/brakes and found that they are "auto adjusting". Kinda like drum brakes on older vehicles when you go in reverse and hit the brakes, they adjust on their own..
After my first long trip with the new Rockwood, I manually hit the brakes from time to time and found they were getting stronger and stronger and was able to reduce the gain on the BC.
Went on the next trip and did just normal braking, and all seems fine.
Again, just my experience with it on my rig.. I've not manually adjusted anything yet, but might check some things out before heading out this season, just to look on the new rigs setup, since it's all new to me too..
Good luck!
Mitch