Hello, I'm beginner's darkroom user. I accidentaly shot on Tri-X 400 120 BW film all metered as ISO160. I have only developed using D-76 1+1 so far. I would like to try pulling -2EV. Is it better to use full strength or 1+1 for D-76? Adding 20% more develop times is ok? Do you have any recommending developer and fixer especially for pulling film?