Heya L6,
Think it would be possible to release the DT's cabs/IRs for Helix use so we can try and get it to sound more like it does naked and still control and have input through L6link? With HX attached then having no cab is too flat, HX's cabs and normal IRs don't seem to work too well. What you have in the DT is just right sounds too good with what's in it.