I would take your 175RD to your RV dealer for inspection.
If your RV dealership's inspection response doesn't address your concerns, then you may want to contact Jayco directly. Ask the dealer to generate the formal service warranty claim request (goes on record with Jayco) and get a copy for your records.
Just curious, with your trailer on level ground and the trailer's twin I-beam frame level, how much of a rise (degree of) are you experiencing with the A-frame?
The A-frame is welded to the main frame's twin I-beams after it passes through the front cross frame plate (also welded here). One would think that the A-frame assembly would maintain a level attitude along with the main frame I-beams.
Thinking "way" out of the box here, is it possible that it's setup at a slight angle to accommodate a specified ball coupler height (?). I only mention this because of your observations of other SLX trailers.
Let us know what you find out.
Bob
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2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2002 GM 2500HD 6.0L/4:10 (retired)
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (Strait-Line)