Replying to Telemark Boots

I have Garmont Veloce Mens boots but over the last month I think my foot grew and the boots kill. This is my first season and I already threw down 250 for the boots so I don't wanna buy another pair. Wondering if a thinner liner would get me through the season. Any help would be great.

By the way I have a 26.5 cm boot. However, because websites are douche bags and don't specify the actual sizing, it is a 25/26.5, meaning a very thin 26.5. On top of that I have a wide foot so it makes for a oh-so-comfortable ride if you know what I mean.