For the kick pad, one common thing is making sure that you are not striking the center of the head, but offsetting your beater somewhat. That seems like something you may already have considered, especially playing a double pedal where you would be avoiding direct hits anyway.
Just going to brainstorm some other things, many of which you may have already considered...
--Cables? Maybe they're bad?
--You running stock pads, mesh conversion, something else? Converting to mesh hemped my crosstalk a pad sensitivity a lot.
Good luck and welcome to the forum!