tiffany, cool. It sounds like your device has less forward-to-back motion than mine did when secured in place. I only had about 1/4" of "wiggle room", but given over a month of build-up, desperation and determination, I discovered that was enough to cause a (failed) ejaculation. As I said, it hurt like a sonofabitch, so I wouldn't want to try it again.
With my CB3000, the tube is bigger in diameter, and I discovered I could fairly easily bring myself to (successful) climax in it, while secured with my PA piercing. I need a snugger tube to assure that my urethra is squeezed shut when I'm at my most aroused.
I'm glad it looks like a "win" for you! Best of luck with the frenum piercing. I had one, years back. It grew out on me almost immediately. It can be fussy. Please do read up on all the piercing aftercare suggestions out on the net. I swear by saltwater soaks, now. they really work well!
mikecb