riding nose high

I have issues riding nose high about 4.5". I have a 2019 4x4 2500HD Chevy standard bed truck. I purchased a Curt A16 slider hitch which in my belief, makes the nose on the trailer ride high. The slider adds about 3 inches to the 5th wheel hitch height. I am thinking of ordering the replacement base legs for a non-slider which will allow me to lower the head height on the hitch. I will remove the slider portion of the hitch. I have over 8" of truck bed rail clearance so I think I should be ok. I will contact a local RV repair shop before I order the new base legs to get their opinion. This will be the most cost effective way to handle this, the new base legs are just under $100. The other option is to try and flip the axles on the trailer. I really don't need a slider with this trailer.
Curly