Accuracy corrector left "May" and "May" on the card. Does this mean I roll 3 red dice crit, blank, blank. I choose not to cancell all dice results but add 2 hits? For crit, hit, hit? Or am I just Misunderstanding how this card works?
You have to cancel ALL dice results. It says it right there. It's like you rolled no dice at all. Then, you get 2 auto-hits instead.
It says you may cancell all your dice results. Then I may add two hits. So do I have to do the first to do the latter? Or is it like R7-T1?
You have to cancel all your dice results to add the two hits, yes. So in the end, you'll have two hits, and that's all. That's the intent behind the wording, anyway.