Hi-
Got a 30 button ebay Bastari in the mail today, it sounds good for the time being. The silicone tubing fix made all the difference, otherwise it was unplayable. Thanks to the person who suggested this. I had to take it apart 2 or 3 times to cut back the tubing a little bit more, so the notes wouldn't lift the lever too much. Also, I used the grill as a template and marked the levers where to slide on the buttons. This speeded things up considerably.
It is much softer than my old Lachenal I sold, but it doesn't sound too bad. I can tell it wants to be played gently and maybe a bit on the slow side. I wish there was something I could do to reinforce the bellows, they seem so delicate. Are they made from butterfly wings? Also I was hoping the reedpan was in the radial layout, no luck there, the "Italian Gem" was a fluke I believe, this concertina looks like a little accordion.
So for @ $100.00, the tubing and some time, I have a playable 30 button concertina. All is well with the world