I have been in and out of chastity for the best part of 2 years now and although my wife’s hates the thought of any device I am a secret chastity wearer and just put on and take off whenever leaving the house (i.e. going to work). Unlocked chastity is not an issue in our house boring vanilla sex only happens once a year if the wind is in the right direction.

I have a CB2k and 3k but the 3k is my most favourite. I can very happily ware it for long periods of time and think nothing of wearing it for the week if I am away. I tend to find for longer periods of time it is best to use the solid ring from the 2K with the cage from the 3K. Works well.
My question (sorry waffling it happens by day 38 your mind goes

Normal ware is fine unless I get cold, my scrotum is very tight anyway but the moment my balls get cold they want to disappear up inside me. The pain that I get from my scrotum (not my balls) as it clenches so tightly, is unbearable. In most situations I either need to unlock fast or just heat up quick.
Does anybody else have the same issue?
What did you do to overcome it?
Did you change to a different device? If so what?