Morse concertinas are into the 1170s now. #122 is about 11 years old. Over the last decade, there have been some design improvements to the Ceili, and also obviously significant experience has been gained. Also, if you aren't the original owner of #122, who knows what use (or repairs not by the Button Box) it may have seen which may have altered its performance.
I'm the second owner of #94; I was close friends with its original owner, and I know it to be one of the more heavily-played Morse concertinas and often in extremely adverse weather or other circumstances. Roger played it in the rain, he played it in the snow, he played it in crowded pubs, he played it wherever the crazy morris and longsword dancers decided they were going to dance regardless of might it would do to his instrument! (We do not recommend you go to these extremes with your Morse, or any other instrument, though many morris musicians can attest to their Morse's hardiness.)
At one point, Roger had us replace the bellows, and the action got a light servicing too (from watching him play, I saw that Roger really punched some of the buttons with his fingers when he played); I never played it while it had the original bellows, but now it's tight as ever and is an extremely smooth playing instrument. A Button Box servicing will probably make a marked improvement for your Morse. Get on our repair list, and when your turn comes you'll only be without your instrument for about two weeks