Hi all, I've been hearing some intermittent popping/crackling noise from my reverb in my SFDR. Since I was running the "mod" where I run the reverb tank back into the Normal channel, I thought perhaps it was that extra cable. No. Or perhaps V1. No. Then I thought maybe it was the reverb driver (V3). I subbed a known good tube there, and I got the same thing. I moved the cable back to run the stock reverb configuration through the Vibrato channel. Same thing. Now to the cables to the tank: I took the tank out and sprayed some Deoxit on the old RCA cable ends and scrubbed them with a wire brush. Then I reinstalled the reverb tank. That seems to have fixed it, at least for now. So here are my questions: (1) I discovered that I have a 2014 Belton Accutronics 2-(long)spring reverb tank. It was put into the old reverb tank bag but without any cardboard or anything underneath. Should it have cardboard underneath it? I'm impressed without how good it sounds, especially considering it's a $20 item. I don't know whether these are high quality or not (I know nothing about reverb tanks), but it sounds great. (2) I'd like to replace this very old RCA cable to and from the reverb tank with something new and higher quality. Any recommendations on high-quality RCA cables that have right angles on both ends? Thanks!