As an update, we spent the week camping. It is clear that I need a little extra height with this trailer. I couldn't easily (without checking) get everywhere we tried to go because the drain and bump stops are so low.
I did follow DaveSchwartz advice above and contacted Dexter. They wanted my axle serial numbers to verify which kit I need to lift it using the manufacturers parts. It looks like an inexpensive, quick and easy solution to my problem. This is the link to the kit Dexter told me to get for my trailer/axle combo: Dexter Axle - Trailer Axles and Running Gear Components - #10 Torflex Lift Kit (K71-707-02)
It seems like everyone would need to send their serial numbers to make sure they get the right parts kit.
The answer from Dexter did come with a disclaimer about side mounting only, which mine is.
Thanks to all for the suggestions!
PS I never did get a firm answer from Surveyor, on their solution.