I understand that but I only have a couple tapes at 3.75ips. I actively avert 3.75 ips tapes for 7.5 ips versions. I have my machine in my system and so far have played lots of tapes with not one being 3.75, I just like having the option for times when I want to on the fly play Mahler on Angel, which is the only one I have in my collection. For the more findable 3.75 ips rock tapes I opt for rarer 7.5 when finally found. The Mahler was part of a big score way back and I had read it was a decent sounding tape at this speed, so kept it. Anyway I'm not worried about this, so why are you? I have a 5050HD you could buy and not set to Slow of you like.
Thanks Ki, for the decimals instead of fractions, I seem to have forgotten them.