CB Range discussion

Hello all, this is my debut post. I’ve gone through the existing threads but haven’t found what I’m looking for. A couple of weeks back I picked up a CB6000S, and my longest wear time was only about thirty-six hours. I am currently using the biggest ring combined with its spacer, yet after not much time has passed, the underside of my scrotum gets so hot it becomes unbearable. I have tested every lubricant suggested here, but none seem to make a difference. The ring stays comfortable throughout the day; however, once I attach the cage, fifteen minutes later brings excruciating pain. My penis size isn’t forcing the device away since I don’t fill up much inside. Even though my scrotum tends toward being high and tight, it burns intensely even when relaxed. What mistakes am I making? Any tips?