There is no adjustment for ground height or clearance on your Argosy. They probably have sagged lower than they were originally just due to age. What nrgtrakr is doing is the only thing possible.
Do you know if your axles are original? If they are, they probably need to be replaced. You can order new axles with a different pre-load angle (not sure if that's the right term) and increase the height of the trailer. Search this forum and you'll see find the information.
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