Check for any obstructions, like a twig, mud dobber, etc., where the arms fold. Any obstruction will cause it to not extend, or in some cases retract, properly.
Wayne MSGT USMC (Ret) & Earlene (CinCHouse) RVM14 (ARS: KE5QG)
Lexi - Goldendoodle
2015 Winnebago Tour 42QD - 2020 Lincoln Nautilus Reserve
It is what it is, and then it is what you make of it.