There's a reason why you guys had a tough time trying to find Psychopsiella lehmmingei. I happen to own one, and it is by far the slowest growing orchid in my entire collection. There has not been a whole lot of noticeable growth in nearly a year! The only thing growing have been the roots and even then, they don't grow very fast.
I recommend mounting them once you get them out of flask.
These little guys were flasked, replated and replated again to insure strong little plants - these should ready to be mounted this month - I will post when I've put them on my ebay page.