Here it is... i had problems with being able to pop my balls out of the birdlocked as it showed up from the manufacturer as well as pulling out b/c the ring was thin enough to fit it all through one way so why not the other way, and my lady had issues with being able to get the device off quickly and comfortably when she is ready to use her cock. I took my birdlocked, hinged rings, locking posts for the cb3000, some plastic ski scrapers, a rivet gun and power drill to build a device that it comfortable for active sports (biking, skiing, etc) that was secure to pull out, and quick to put on and take off. i succeeded! i cut the lower portion of the ring off the birdlocked and shaped the plastic scrapers into front and back plates that sandwich the top section of the BL ring...measured carefully and drilled holes thru the plastic plates that correspond with the positions of the holes on the cb hinged rings. then riveted the plastic plates to both sides of the BL ring above the cage portion and drilled out my hinged ring to accept the locking posts i had from my CB3000 (theyre a bit bigger than the original guide posts). Glued the locking posts so they faced the same way as the cb series, and trimmed them flat to eliminate poking. add the real locking post in the center, a spacer, and thread the BL cage tether over a cb hinged ring that i cant pull out of, and boom im in big trouble. my lady is ecstatic and luckily for me, she gets really turned on by me being in inescapable chastity. the only prob that we have had so far is that the BL cage tether started to tear, and i fixed it with clear silicon adhesive. seems pretty strong now. what do you think?