I have been trying out the Miller's new PA-5000 chastity device. My penis shortens quite a bit when flaccid, which is a problem for most any chastity device. The PA5K in particular made my piercing quite sore after just a few hours of wear, due to the constant pull. So, I shortened the PA5K. The PA5K comes with diagonal slots in the side, so it was easy to cut across the bottom of one of those slots to produce a device that is the original length on top, but shorter on the bottom. The result is much more comfortable to wear long term, but now there is a bit of unprotected penis on the underside when erect. I don't know if I could masturbate to orgasm by stimulating that little patch of real estate, but it's a real possibility. It is a very sensitive patch of real estate, and if I had been locked for a few weeks, it might be just enough. Also, the penis is narrower behind the glans, so the entire tube is not as tight as it was originally. It's still snug, but it could stand to be a bit tighter. Regarding the exposed underside, I may try attaching the 5K to the shield part of a CB3K, so that I can use the "trapped balls" to cover the underside of the penis. The only advantage that would have over the original (shortened) CB3K is the built-in locking mechanism for the PA piercing. I would also like to have the glans enclosed, as with the CB3K. Perhaps it would be easier to incorporate the PA5K lock into the CB3K cage? If anyone else has any ideas or insights, I would love to hear about them.