I see the orange sidewall in your photos. Are they Experience 88Ti? I have those skis and I had the exact same bump issue after waxing them recently.Thanks all for the replies! The shop is a larger retailer so I am not surprised they are pushing back on the warranty -- still not great, but kind of expected when shopping for a deal. My main goal here was to figure out what caused the issue so I could learn from it, and I definitely got the info I needed. I was using a colder wax and had my iron at the recommended temp for the wax, but must have slowed down over that spot or something.
On the bright side, I did reach out to Rossignol since they are rossi skis, and they are going to swap the skis out for me.