Try to sac on f7 and f2. Pieces don't have the same value. Initiative matters much more than material, but you need to check on your partner. Knight is more valuable, because you can check and it can't be blocked (only captured). It's normal for one of you to be attacking and the other feeding. Obviously if you're crushing on both boards that's great, but don't be afraid to be feeding your partner or to sac like crazy and let your partner just help you. Know when to be greedy or give.
@NathanRubas Try find a good partner who play's same or better than you but most importantly someone who listens. Bughouse is all about communication with your partner.
Game abortions are caused by the broken matchmaking system. Even if you set up -400 +400 range, sometimes you get people out of the range or some games where the games arent balanced, lets say 1500,1600 vs 1300,1200 instead of 1200,1500 vs 1300,1600. I personally would avoid such a match because I dont want to risk the -12 rating(got a lot of games where my partner quit midgame).