I have seen several annealers with constant turninr with 2 torches. Some have them both hitting the case at the same point. Some have the 2 torches spaced apart where the case is totaly out of the first one before it gets to the 2nd one. Hiting the case with both flames at the same time would seam the right way. When the case is out of one then goes in to another one looks all wrong. The annealers that have the case stop and has 2 torches always have them both hiting the case. Any thoughts?