Birdlocked discussion

I own a cb2000 and never managed to keep it on for more than a few hours because I felt like my testicles were being torn off. My wife and I were becoming quite discouraged, thinking long-term wear was impossible. Then I spotted the birdlocked device and thought that might be the solution. Initially, I wore it for short periods to adjust, finding it VERY comfortable, which raised our hopes. Last night, I put it on and handed over the key since she decided I needed a push to last through the night with it secured. I took two shots of Nyquil to help me sleep before heading to bed. For the first three hours, I woke up every 15-20 minutes; then for the next three, my wake-ups were about an hour apart. The white-hot pain in my scrotum was what roused me. I kept trying to pull my sack down slightly to create slack so the jewels wouldn’t shoot out. When her alarm rang, I shouted my safeword and got unlocked. My question is: does everyone experience this? If it’s normal, how long until you get used to that pain? If not, what do you think might be wrong?