Coupler height on 2007 Surveyor 255RS

[capebuff]

Sorry to post up in two places but in urgent need of this info.

I recently purchased a new TV and need to adjust the height of my Blue Ox hitch.

Does anyone know the coupler height for a perfectly leveled 2007 Forest River Surveyor SV255RS?

I have an appt to get my Hayes brake controller from my old TV installed on my new TV, and while I am there I'd like to get the Blue Ox hitch adjusted (since they have the heavy duty tools on hand).

I measured it at the storage unit but the ground is a bit uneven left to right and front to back. I came up with 22.5 inches.

Thanks!