Picking my first ring.

Hello all!

My wife and I have been playing around with a FY Jennic Holy trainer 5 knockoff I bought off amazon to see if this was right for us. After a few mis-starts we’ve been getting into it. I’ve had one week in with removal for hygiene only and release at the end. Currently I’m at one week locked and we’re looking to go longer.

I’m trying to finalize my measurements. Currently I’m using a size small ht5 knockoff cage with 51x 45 mm cage. I did have to boil and increase ball gap by bending the heated resin. It’s snug but comfy. I know I need to decrease cage size. Potentially to N or N+. Cobra. My current cage size is small is 50mm in length from bottom of cage. It fits well at first but after 3/4 days in my cock tends to withdraw further and urination becomes difficult. I’m leaning towards a size 4 ring.

I’m wondering if anyone has had a similar transition from holy trainer to Cobra and has any further recommendations or critiques on my thought process.

Thanks!