FWIW, before assuming that the insurance company will not treat you fair...
do give them the benefit of the doubt.
Case in point: several years ago I had to have a lock replaced and door panel repainted after a burgler tried to break in to my car. Prying instrument had been used -- you can imagine that the damage was local but intense.
I talked to the shop and to the ins adjuster about having some trim replaced around the window that was badly worn and UV damaged, at my own expense while the door was apart. They both said that they appreciated my honesty. I did directly pay about a hundred $ for the trim work and insurance paid all the rest.
The shop owner said that sometimes customers try to get unrelated work included in the ins. repairs and he did not like those conversations.
So, be nice, be up front, and you may end up with some part of the bill to pay for what would be "preventative maintenance" anyway...
And, take accurate notes, with exact quotes...
I figure that there is little harm in being honest, and you lay the grounds for a succesful legal challenge later, Heaven Forfend, should the situation come to that.
Regards,
Loren