Hi Caves4Me ... thanks for the heads-up. Your thoughts are welcome. I hope to take both paths at the fork in the road. Side Mounts and Doubles (with Manifold.) Both are in theory and concept of use, within my reach. I just do not have any experience in either. So, I am reading the book "Staying Alive" by Steve Lewis. Wow, he has been hinting ... yes, hinting at the HOLLIS sms75 (side mount system.)