I use Groove Agent 4 as a standalone app as my sound module to my digital drumset (Alesis DM7X) It all works great… But the drumsets seem to have been recorded with different stereo polarities. And that’s kind of annoying when you switch between drumsets and you suddenly get the ride and Hihat at the wrong side if the set. So now I wonder how to switch between L-R polarities, fast on the fly.