Hi all.. I just bought one of these and have a dumb question. I have used a cskim for the past year on my 650. Could never get it going right.. I think I really don't know what I'm doing.. anyhow got this installed.. water level is at 21cm that they recommend. I used the water level adjustment and have the water interface right where the cup attaches.. should the air valve be fully open?? I really don't know exactly what I'm doing. Thanks

