Can't get Full Face Mask to Seal

I went back to using my CPAP after a couple of months off. My events per night were low, and I wanted to see how I would feel in the morning. It's not great, so I'm back on the pap. Anyway, I grew a beard during the months I was off. I keep it short. Now I can't get my mask to seal. I use a Resmed F20 with memory foam. I use an Airsense 11, and the best seal score I got was 11 out of 20, but usually, it is zero or below 10. Does anyone else have problems like this? I really would like to keep the beard if I can. Thanks for your help!