Rustic is pointing to one of my earlier posts on this topic. Short version is I was close to max on my rear axle even though the TT weight was well within my TV's range (8000# I think). My sticker said 4188#. Remember that the sticker only includes propane and none of the "stuff" you will load into it.
TV Rear GAWR 4128#
Rear GAW 3800#
Pitch, what year is your 23B? Ours was a '12 and I see yours is a tad heavier than ours was.
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks