I adjusted mine on the Challenger and have not had any issues. I lowered the rear 2 clicks to allow for water (rain) runoff. The awning retracts fine with the 2 click adjustment on the rear so it is basically a permanent setting for me.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054