I really like the PSI Assembly/Disassembly press too and I'm on board with the whole hole thing. I swear I've had it leave some marks on some of the nibs I pressed in. As Ken has done, I made a sleeve to slip over the end with the hole, but I made mine out of HDPE. I also made a sleeve to go over the aluminum end just so I was pressing against HDPE from both sides. I've even considered making one or two special sleeves with the right sizes of recess holes. Then on some of the threaded components I can press against the shoulder of the component instead against the threads.
I rarely use my press for disassembly anymore though. I've been more successful with the PSI "Soft Jaw Barrel Gripper" clamped in my bench vise and the PSI disassembly punch set. Although the press works, it applies more of a constant force where the punch method applies a more abrupt forces by being struck by a mallet. (That and I got tired of converting my press back and forth whenever I needed to disassemble something -- which in my case seems to be far to often).
I might have to invest in this new MT2 "Between Centers Pen Press" though. I really like the idea of having the precise control afforded by cranking the tailstock over the breakaway force that must be overcome using the handle/leaver system on the pen press, especially when pressing a component to a specific depth rather than pressing it up against a hard stop.
Regards,
Dave