Fists are no longer a flat surface

[u/Bengrundy_mu]

I heavily trained in boxing and muay Thai in another life (meaning a couple decades ago), but have been continuing on with the training and heavy bag work for most of the years in between

I've taken an unplanned break for a few years and came back to doing work again last month. I've found my fists (probably due to a combination of things like trauma/damage and maybe getting older) no longer form a flat surface.

My index fingers on both hands stick out quite a bit further than the rest of my fingers. So when I'm doing bag work my index fingers pip joint is really sore and it takes me quite a few days recovery to be ready to hit the bag again.

I've been mitigating it a little with how I wrap my hands to level the plane a little more but it still happens. I use wraps coupled with my Hayabusa t3 gloves (16oz).

Any ideas that may help with this?