A few years back I had a mix of tayda, alpha and mammoth/stomp pots. I was having trouble on occasions with pot shafts aligning with drill holes. After inspection I noticed that *at the time* the legs on the tayda pots, between the pot body at the bend, was ~1.25-1.5mm or so shorter than the others. The vertical portion of the legs were not longer so I don't think it was a manufacturing error. Seemed more so by design. Wouldn't be a problem if I used all tayda pots but when using with other brands, it was just enough play to be a pita.
This may absolutely not be the case any longer.