Gene,
It's been a while since I've used Adjust + but I had checked the speed settings against a couple other records and the KAB strobe. I do not recall the difference you noted. I would have most certainly brought this up with the manufacturer at RMAF last year. Of course, I don't have your record. One thing that WILL through the reading off is the CPU processing delay associated with delayed readings from the A/D card you are using. One way to double check this is to lower the bit rate and the FFT sample size. If you suddenly see the correct speed, the CPU may not be fast enough to use the maximum resolution the program is capable of. I hope his helps.
Audiotomb,
The Adjust + Software is different from the alignment protractor you are speaking of. It's feature sets are different.
I don't want this to venture off topic but I will state that I have been able to get excellent results with either method (Arc or Feickert tool). In fact, I have used the Wally tool to verify my Feickert alignments (not the other way around for those noting this). Patience is needed for both tools and a clear understanding of how to use them. I may also add that both alignment tools are useless if you don't get Pivot to spindle distance correct. For those with fixed (non-moving) armboards, this is extremely critical. Experience tells me that I would suggest that one always double check the Pivot-to-spindle distance before ordering an arc style protractor.
Dre