If so, maybe they used the previews for the wrong ones. I'd probably sit through those two Bessers before some of the others.
The one thing I noticed about the Bessers is that there is a feeling that it is Moe and Larry with another guy and not really a team in the true sense of the word as they were with Shemp or Curly. The first one filmed was Muscle Up a Little Closer right? Well when they first get to their girls house, the girls point out how they like the guys new hair styles. It's like it is a new season of a television show (if anyone is familiar with MASH, the first episode they filmed for the 7th season had BJ with the mustache. In several scenes other characters had to point out that he had the mustache as if we didn't know). In addition, Moe refers to Joe as 'this guy' a few times. The by-play between Moe and Joe in that short when Moe is yelling at him to wrap the package up is funny but doesn't have a 'team' feel to if I'm making any sense here. I think it would've played differently if it were Moe or Curly. It's almost as if Moe and Larry are still the 'two' Stooges and this new guy just showed up and they can't really figure him out yet. It's kind of a reverse of the Curly years where Moe and Larry are the stronger players (for what it is worth) in these shorts and Joe is there to remind you that they are still a trio. He is a stronger personality and just happens to be in the same film with the other two.
Also...does anyone wonder what the next seasons slate of Shemps would've looked like had he not died? I mean by the end of his tenure, they had reworked every short from 1947-1949 with the exception of Mummies Dummies. Would they have started to remake or rework the ones in 1950 had they continued with Shemp? Would they have had just as many original stories as they did with Joe if Shemp had continued with them? Just speculating...