Wanted to give an update. Still struggling with heavy feet. Got this video to show from last week. Basically, I'm zero weight needed for buoyancy in a 5mm or thinner. In this vid I'm in 3mm and cylinders are full. I've added 4 lbs to shoulders. Still not enough it seems. Heck, the unknown air in my rear bag and dsmb didn't even help. When I relax (in my goal to be able to hover with no movement and perform other skills) I almost immediately feel the drop and then start finning to keep legs up. Is my problem as simple as "keep adding weight to shoulders until I get it" ?