I have a upcoming Trimix course in September so I’m practicing diving with two deco tanks. Before this I used to carry either an AL80 or AL40 for deco, which I hardly notice through the whole dive. I like the idea m carrying both tanks on my left. However, I had some trouble with my trim with both tanks on my left. I could not keep my trim because my left side was much heavier. I would rotate to my left as soon as I stoped my fins. I could also feel that the tanks were dragging my left chest d ring. I had neither of these feelings when I dove with one deco tank. I had people telling me that air in the wing would balance by itself so you don’t need to do anything but I didn’t feel this way at all. And some people told me people carrying both tanks on the left don’t carry full tanks. There is only around 160 bars in it so they’re closed to neutral. I’m quite confused about this. How do you guys keep balance when having two tanks on your left? Are they full when you start the dive? Any suggestion is welcome. Thanks in advance.