1.966 OG to FG 1.022 is just fine. You typically want to see a 1/3 drop (or more) from OG to FG. In your case, OG was 1.066 X .33= 1.022, Which is right on. Don't forget to fish conditioning in a secondary....1 wk at fermentation temp and one week under refrigeration....thime it's time to sip