What I really want to know is.............how are the door operator cams lettered, front to back, or back to front. I know that "A" is the DCL and "B" is closed until 2" from open. I am thinking "B" is our problem as OPS is not pulling in when this happens, which in turn is not pulling in DT, which is not allowing OP to pull in and open the doors.My man pushes in on OPS when the situation occurs and we get OP. This is a T1-C operator.