The only thing I can tell you is to try to mix your strings around, so don't use the same "order" when you pressure. Not only that, but also don't finish your strings at the same point everytime either, so you can do f3,3,b3 once to get them to respect that last hit, then maybe just do f3,3 followed by say d3, then another f3,3,b3. Same goes with 2,1. So basically use different strings and don't get predictable. Not sure if this was the answer you wanted...