apparently my little MBR thing is now suddenly working fine until approximately 1 minute after it starts (augh) where it then suddenly decides to jump to something on the stack (AUGH) that isn't even on the front of the stack (WHY) fun happy joy time
so i figured it out apparently int 0x10/ax 0x1301, despite reading from the stack perfectly fine, decides not to ever pop these items off the stack, which i did not know, leading me to make the mistaken assumption i didnt have to pop them off neat