<Sigh> just what I thought - someone glued this neck pickup volume knob to the shaft on this '60s Trini (actually, all knobs were glued). Tried heating the knob to release the glue but the glue bond trumped the shaft-to-pot connection. Bummer.  Oh well, it's going to be replaced along with the bridge volume pot (volume drops off around 8) with Emerson Custom Pro CTS pots.