So as it turns out, as I tried installing the breather bolts and after I already cut the draining hoses off, one of the bolts came right out, but the other one is stuck big time (I bent the hex key trying to get it out). Any suggestion on how to get out a stuck, and slightly threaded bolt?

I pray to g-d it’s not crossed threaded!! I meant that due to me trying real hard to get it out, it slightly stripped the inside of the bolt. I believe it still has enough form to grip a hex key, but it’s really locked in. I initially though maybe I was turning it the wrong way, but the other one came right out turning left.

Never mind, I got one of my more mechanically inclined friends to get it off.