So you've been diving with no weights, a SS backplate and no air in the wing?
Maybe it's just me getting used to a different feeling configuration.
Jim
I dive your same setup, including wetsuit, at Clear Springs and have no problems.
You are just not used it yet. Give a few more dives. You will learn how to balanced to out in no time
This. Take Tobin's advice (the guy knows his stuff) and practice. You'll get used to it and love it, especially when you get to salt water.