Captain's Wench Over Shoulder, Brusing/burst blood vessels

I’ve had excellent growth hanging BTC with the captain’s wench. I’ve added Over the Shoulder stretches and initially things were great. But with daily OS hanging I have developed brusing/blood blister/burst blood vessels in the tip of my penis. All the pressure from the weight concetrates at the very tip of my penis.

At first I didn’t mind it, because it was just a bruise. But it’s getting worse so I’ve backed off. I’m hanging 18-20lbs, usually doing 2-3 sets a day.
BTC hanging never caused this issue, but over the shoulder causes this. I was thinking about altering the cushions in my captain’s wench. I may also bring my sets down to 10 minutes.

Any advice would be greatly appreciated, Thanks!