Pink Jimi, haven't seen you posting in a while?! i was a tiny bit worried, and checked when your last log in was, just out of concern. i wanted to make a thread asking where you were in ''lounge OT'', when i checked you last log in, i saw you missed your 10 year anniversary, so congrats on 10 years!!!
the problem OP posted reminds me of a grounding issue i had a lot when i started out, not having the circuit ground connected to the signal ground, only through the volume pot.
cheers, Iain