You never-ever what a COLD FEELING in your GLANS. If you have the unit on too-tight and is cutting off the circulation you will end up with a DEAD-WILLY.
You may try shortening your extension bars an eighth inch to relieve the tension needed to maintain the hold. Also, when you use the device, you will have more tension in different positions, sitting versus standing.
You will have to make minor adjustments to become acclimated with the device to find the proper setting for yourself. Most of all, be patient with it and try not to gain an inch in a week.