it might be an idea to diagram your patch... so we can work out where your 'intermittent +ve voltage' is coming from
you could just use the envelope for the kick and inverrt it for ducking vcas... no need to envelope follow the kick...
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities