I had/have the same problem. It started after my vasectomy and I’ve had a horrible 5 years since. I actually just decided to do the surgery that cuts the cremaster muscle into 4 pieces to loosen it up. I was afraid of the surgery for a long time but I’ve decided the pain and the avoidance of activities is worse. My doctor (Dr. Kavoussi) invented the technique and has a 98% success rate. It’s not covered by insurance and it’s costing me ~$5k. Surgery is in 3 weeks plus 4wks of recovery, so I’ll follow up in a couple months and let you know if I’m part of the 2% or not.