Discolouration From pumping

I have been hanging for close to 3 years . Small amount of discolouration just

Below the head under the penis. Started pumping @ 5hg,4 months later the

Entire top shaft of penis discoloured .Has anyone else had this problem? I’m

Looking to gain only 1/2 inch. Is this possible?

Factors contributing to your condition come from both pressure and time. How long do you stay in the tube at 5”hg?

Do you pump up rapidly to 5”hg or nice and slowly?

What is your pump routine in terms of days on and off?

Do you still hang in combination with pumping.