I am lucky enough to have an old fashion brick and mortar photography store here in Topeka Kansas
I don't buy a lot of equipment from them but I have taken classes there and had photos mounted on canvas, slate and metal
Wolfe's Camera | Photo Superstore in Topeka Kansas
I stopped by this AM with my "injured " lens
I didn't see the gentleman - Tom - I was looking for and talked to another employee
he was very sympathetic but didn't have any idea on what I could do and doubted that it would be covered under warranty
on the way out of the store I spotted Tom. I waited until he was available and thanked him for his help in giving me advice for photography in the Gran Tetons and Yellowstone National Parks trip. He asked why I was there and I showed him the " boo boo "
He had an idea and got a $49.00 tool which I would call a " spreader " and tried it. It worked and we tested it by mounting a UV filter.
I asked about the charge and he said " no charge " and put the filter and tool back into their cases
check out their web site please, they also do ebay auctions as well