what does adhesion have to do with anything? Your dick is being held in by a vaccum, not adhesion. The lube is for comfort and to create a seal. Slippery lube is great.
Lube is not the problem, i use a shitload of lube!
You must be loseing suction somewhere and i'm guessing it's coming from the initital pump. When you pump first does any of ur glans get sucked in? You might be taking the ball off too quick. Leave the ball attached for about 15 seconds...
I get max tension no problem. What i do first is half squeeze the ball and release it. The tip is barely inside. Then i take the ball off squeeze and reattach it. i do this twice. So i get 2 and a half sucks with the pump ball. Even my foreskin gets sucked all the way in. try this and see what...