tend to agree with Dakota.
dealer fixed some of my gelcoat cracks but some were determined to be due to my use. I agreed with it.
I would not expect them to fix a bimini if it was due to wind or some other issue. warranties are typically for defective parts, not parts that break through the normal course of use- as painful as that replacement part can be
as to the 3rd piece, that seems a bit wrong that they would not warranty a part like that unless it is determined that it was used as a step at some point. kinda tough to tell on that one and would think the dealer would step up and fight for that one.

maybe Rick will chime in and help the dealer out.