Pumping With Upward Curve

Every time I have ever tried to do it, it always rubs up against the top and I feel like I can never get max gains because of this. I wish someone would design a pump that you could adjust to match the shape of your members curve. Has anyone encountered this or does anyone have any recommendations

I pump with a curve and the tip always touches the sides.

Lube helps the glans slide up the cylinder.

Some information here: Cylinder designed for upward angled erection?

By experience I would like to reinforce what dtwarren1942 said. As long as the penis is well lubed up, no problems.

My curvature is downward and when I used to pump the glans and the top side of the shaft always made contact with the cylinder.

I can’t actually pump without lube because the glans sticks to the walls without it.