Montana too big?

I love Montana. I love how big he is.

But some of the doorways aren’t made for him. Is there any chance of helping this? Make doorways/archways bigger?

Same with Toby…

Especially on Overgrown. Going out the side doors from the base. Going through that archway to get to the thrall camp. Getting up into the middle sub-base. Getting into and out of the Bunker on the side.