I built the Flair DR1 about 4 years ago . Mine has an Enya120r in it , is 13lbs ,has 16-6 master airscrew . Flys great , don't forget to correct the cut out in the middle wing , not on plans . I don't have plans anymore , but i have just put incidence meter on it .
It has on the eng , 3degrees right , zero down . Now don't forget the stab; has some 3 degrees pos; on it , so that is the 3 degrees down on eng ; you mentioned . Can't remember 4 years back , but I think the firewall has that built into it ? They stretched the nose , but at least it doesn't nose over too often ,