Replying to Boot issue

Last season the issue with my boots was that they hurt my feet and froze my toes when I was skiing. I got them punched at the beginning of last season. I also had to wear thin socks in order to get them on. Now I try them on, my left foot is a little bit bigger than my right foot, both toes of my feet curl down. I went to try on a few pairs of ski boots w/o knowing the size of my current pair of boots. The person who was fitting put 26.5 boots on both my feet, it felt really tight and I just went home to look at my boots. When I got home I checked my boots and the only size I could find said "270mm-275mm" (does this = 27/27.5?) and they are also too small for me and they've been punched. So should I buy new boots or just get my current ones punched again?

Btw - they're nordica and i've had them 4 years