?????? ???? ??????? ???? ???????? ?? ???? ??? ??? ????? ?? ????? ?? ???? ????? ??? ???? ?????? ??? ??? ?????? ???????? ??????? ???? ?????. ???? ???? ????? ?????? ????? ?? ???? ??? ?????? ???????? ???? ????????? ??????. Is the right angle 30 or 31 deg ? I´m just touching up a litte so I´d like to grasp the specs for the initial sett up. (no mult