So here's the deal: I have a Grimeca System 12 on the front of my Bighit. I was recently changing the tire and I just don't know what happened: maybe my brother pushed the lever while the wheel was out and I forgot to insert that thingy that keeps pads where they're supposed to be. So to make long story short, the brake lever now has 3cm or so of "free" action. I've tried to open up a reservoir and pump the brake with the wheel on. I added some DOT liquid too, but it didn't help at all. Does that mean I have to rebleed the whole thing again? Are there any solutions for that?

Thanks in advance,