rub

I have 2022 GX460 and installed 275/65R18 Mickey Thompson Baja Boss tires on stock wheels. Considering high positive offset of stock wheels I got no rub anywhere besides driver side UCA on full lock and under braking situation. Question - will adjusting caster angle slightly forward solve this...

I have a slight rub in my wheel well pictured. I bought the heat gun, fired it up, then got cold feet. I thought man idk wtf I’m doing I’m going to accidentally warp my tire or there’s going to be something behind this that I fry or catch on fire haha! So my new question… maybe more of...