I cant get air into my legs....i have been feet down for over a season. first i thought it the fins and changed them out, then we moved my tank up a notch. then when all configs were good to go, i was horizontal in the pool but there was no air in my legs...I thought this odd when i first dove the suit but also chalked it up to my weight belt being too tight. so i took off the weight belt put some weights in my cam band and NOTHING. i can get air in IF i do a somersault, then I am feet up and corking....there is not a middle ground. I stood in the pool, inflated like a balloon and all the air stayed on my top this is with nothing but my b/p and wing/tank. All I know is that when i use my air, under water, like a bc, if i over inflate, instead of it going to my legs, its going out my neck seal and I am getting wet there. I can feel it like an over flow....
Diagnosis from afar is always dangerous, my interpretation of what you are experiencing may be completely wrong, so while my intentions may be good, my advice may be worthless. ... But, it appears from reading the original post, and your follow-ups, that the problem is not that you cannot get air into your legs / feet. Rather, most of the time in the water, you are probably slightly vertical / head high, and the air bubble stays in the top part of your suit. When you move to a slightly head down position, air DOES go to the feet, but too much goes, and you end up inverted. Several have mentioned the tightness of the weight belt, and the BP harness, and you responded that you have tried taking the belt off / loosening the harness, and the problem persists. I have noticed that I tighten my belt quite a bit before entering the water, and then have to manipulate the belt underwater, to get air to move to my feet. Same with my BP harness waist strap. So, even after you address this issue, keep in mind that you will want to monitor the effects of waist strap tightness during the dive.
All I know is that when i use my air, under water, like a bc, if i over inflate, instead of it going to my legs, its going out my neck seal and I am getting wet there.
So, if you overinflate, the air has to go somewhere, and it either comes out of your shoulder valve, or displaces the neck seal enough to escape there. Escaping around the neck suggests either a LOT of air / big air bubble, or a neck seal that is generously loose. It almost sounds like you have too big of a bubble. If you stay slightly head up, you are OK, but if you go slightly inverted, you get a big air shift, and end up inverted. You have looked at fin weight, tank size and position, weight position. (Personally, I have not found that using the DUI W&T harness is a useful approach, but that just may be me.) You have moved some weight up to the tank cam band. Is it possibly that you are attempting to add weight to push you head down? So, I would also ask, how comfortable are you that your total weighting for your gear configuration is optimal - have you looked at adjusting the total amount of weight? If you are somewhat overweighted, you might be using more air in your suit, and the effect of the bubble shift may be more noticeable. If you are even slightly overweighted, you may end up adding more add to maintain neutral buoyancy, the bubble will be bigger, and if you dive in a slightly head up position, already, the bubble will exacerbate that position.
Several have mentioned using some bulky pants, and that is an option. But, even for that to work you have to get at least horizontal enough to let some air into the lower half of your suit. One other consideration might be the use of gaiters around your lower legs, to limit the amount of free space on you lower legs IOW, you use them to end up with enough free space to add some buoyancy and allow you to remain reasonably horizontal, but not so much that you go inverted. I didn't see mention of that, but may have missed it.
if i do a somersault the air WILL go into my legs. but i dont want to rely on that method for trim. it is also very disorienting.
I have found that doing a somersault is ultimately not necessary. But, I do have to orient myself slightly head down, usually when I reach target depth, so that I can actually feel the air moving to my feet. At that point, I refine my trim with my wing, keeping enough air in my suit to minimize squeeze, and when I do this.
