Yes I am. - Long time ago I overlapped one of the few existing images of the V29 over one of a D.VII taken from the same angle and the difference was evident. Also if you have Jack Herris' book "Germany's fighter competitions of 1918", it includes plans of the V29, but beware: the lower line of the fuselage was not completely straight from under the seat back to the tail as in the published plans. It had a slight curve, similar to that of the D.VIII