When flying, after a while i hear 'Altimeter setting', it keeps repeaing (Dash 8 Q400), even though my altimeter setting is on standard... Any idea of what the problem can be and how to fix it? Thanx

It's not the Majestic Q400 it's RAAS Pro, it can't see the correct baro setting because of the way the MJC systems work. You can disable the warning in the RAAS settings app.