Henry, I've done it both ways with the Lenco and Mk3. The DP80 has no cartridge mounted at the moment, so could not do it with "stylus drag" factor. Likewise, I don't have 3 tonearms on any one tt, so could not repeat that show either.
If the tt is not slowing due to stylus, based on Timeline, then one would also not expect to see it with the KAB, so I am in no position to argue your point that only the Timeline can reveal it. Nor do I doubt you, absent any experience of my own.
If the tt is not slowing due to stylus, based on Timeline, then one would also not expect to see it with the KAB, so I am in no position to argue your point that only the Timeline can reveal it. Nor do I doubt you, absent any experience of my own.