@bdp24 Free the Decca by NOT loading it down. Some say run it wide open at 1Megohm. I’ve not tried that. I do run 51k and 47k. I tried 33k and 27k and it lost a little life and air. My guess is that unstable, loose, or cheaper bearings of yore lead to the idea of utilizing damping resonance by loading.
includes a 15k setting in his pre-amp, specifically for Londons/Deccas.