Stretching synthetic boots?

I've got a pair of Baturas that I really love, but the toe box is just a little too small for my right foot due to a bunion and it gets pretty painful when I climb multiple days. Has anyone had success stretching synthetic boots?

they arent going to strecth much if at all.

Bring em to a bootfitter. They can probably stretch them out just enough to offer some bunion relief....it's worked for me.

Batura and Phantom Guide can both be easily stretch a good bit by a professional ski boot fitter. BTDT...easy to do with the right geat and a bit of skill/caution.

You won't get a 1/2 size out of them but you can solve some foot pain issues fairly easily if my experience is any example.