Chastity device reviews discussion

Hello there. I’m new to this forum . I have played with chastity devices on and off for several years. Mostly off as my wife finds it all a bit weird . About 6-7 weeks ago I decided to give it a go cut a long story short i wanted to experience longer lock up times so I purchased a holy trainerv2 . Wow soo comfortable, it’s awesome . I have been able to lock myself up 24-7 for several days at a time, this is the only device I can get a good nights sleep in, you realy do forget it’s there. I think this may be my problem, the last couple of nights I have woken up with my penis either fully out of the tube or very nearly out of the tube . I assume this is because whilst sleeping I am totally relaxed, with previous devices I felt like I had a permanent hard on . i measured as per the holytrainer website and ordered the 45 mm ring as per their advice . As a precaution I ordered the 40 mm as well . Never needed the 45 the 40 fitted realy well . Has anyone else had the same problem? Should I order the 36mm ring? I am an uncut grower and I suspect that’s also part of the problem . The cage is mostly full of skin so as a result pulling / falling out seems easy . Should I go in with head exposed? Or should I find a way to get more shaft into the tube? I am Realy keen to find a solution to continue wearing the ht long term . I would like to sort it before I hand over the key as it will be inconvenient if I’m asking for the key every morning so as to refit it . Any advice would be gratefully accepted, many thanks Danny