My first attempt at using Shielded Cable (and hanging the 68ks) for Input Jacks to V1. I followed RobRob... Here are my pics... Grounding only at the Jack side and NOT at the Tube... All three other jacks work correctly. I first thought that maybe the ends of one of my 68k was grounding against the shielding so I made another lead making sure that was not the case prior to shrink wrapping. I did it like this... When I measure tip to sleeve on a guitar cable plugged in I get these readings: Normal 1- .634M Normal 2- 130K Bright 1- 1.1 ohm Bright 2- 125 K I triple checked over all of the resistors (68k and 1M) all in spec. What am I overlooking? Thank you!