I am intrigued by nottspumpers work, steadily widening until you managed to mount the SP easily. In my case, when I had received that state, it also meant that the plug flew out the next day or night by its own. Your glans chamber must be shaped differently than mine
Also, I believe that some of us, during pressing/widening, may rip some kind of stopper membrane/muscle that will help the plug stay inside... I think I did, as I have written about earlier.
The Tripball is a nice toy but as it lacks the final shoulder, it would slip out as easily as the Triple Rider.
