I've been struggling with MOD composites forever it seems. This is the technique I used today, out of exasperation from continually failing one way or the other. This is 28 on one of my geriatrics. She had a very old inlay that came out last week and we used TERM for a temp until we could get her into the schedule.
So for me I'm finally happy with an MOD composite. It is difficult for me to get both proximals well contoured. This is the best way I've found. Hope this helps -