How about to jump from one COS to another? I want to make 4lo work correctly. I already have a good working COS5 based on 12212156, but need to start over with a 6.0/4L80 tune based on 12212156, back to COS, and segment swap my motor and trans stuff back over. Is the fastest way just to flash COS5 on there again, drop in the 6.0/4L80 cal, and segment swap my motor trans stuff? I'd go out and try it right now but it's 20 minutes away at the moment.