RAIL

Hammering your grip may not be the answer to getting a tighter hold on your opponent.
Rotation is where #beastmode lives, and the tall kneeling press is a great place to start.
Two days is a far cry from the length of time athletes usually suffer with ITB. Most of them deal with it for a year or more.
It's no good to just seek mobility. Mobility without motor control is just another injury waiting to happen.