I'm looking at some configuration changes on my Prism2. First I am looking to get rid of the yoke by sewing a 2" female buckle onto a strip of 2" webbing. Use a weight keeper on my backplate harness to weave the strip with the buckle onto the shoulder of my harness. I am hoping that this will move my counterlungs down a little. Currently, my ADV sits almost on top of my shoulders with the counterlung set as low as I can with the yoke. I use the smaller counterlungs on my unit. I will tuck & secure the velcro flap with some large double sided velcro to my harness. I will definitely have to make sure I don't overstretch the hose going from the head to the top of the counterlung, but I am thinking I can get those lungs down a little bit to allow for a little freedom of movement of my head. I am also going to replace the current Hollis wing with an SMS75 wing (bungee'd at the top & free at the bottom). I am thinking this wing will give me extra lift in the rear, allowing me to jettison some weight I carry up front (10 lbs) to counteract the 2 AL80's cylinders that I use for bailout & an AL40 O2 bottle. I will try to post pictures as I go with it.