You are close to the proper set up. To make the perfect single flare you will want to use OP 0 with the line just snug in the dies to allow it to push and level everything out. Then with the line still just snug run OP 1 to push the line the proper depth inside. Now you tighten the clamp on the split dies to lock the line in place and run OP 2. This will give you the perfect flare.