I’m sure this has already been covered, so apologies in advance. But there is SOOOOO much info in the support section, who can find anything specific? I already searched ad nauseum!   Anyway, I’ve seen stuff that says “Don’t Do THAT!” regarding plugging a Variax (mine is a JTV89F from a few years ago) into your Helix with BOTH the 1/4” AND the VDI thing. Does that still apply? And what if I want to use “Boston’sPizza” . . . Both cables? Will that blow up my guitar (I've already done th