I purchased the HD-500X and a Mission EP1-L6 about a month ago. So far, I like everything except the way the volume pedal function works when assigned to the Mission, the taper is a little, well, off. It seems like the volume increases very fast when coming from heel down and it doesn't change much when you get close to toe down. I talked to mission about it, they confimed that putting a resistor on the cable will change the taper and make it work better, but it was more of a hack than a fix and that it only seems to be an issue with the pedal when used as a volume control. They hinted that it seems to be more of a firmware issue. Is there any likelyhood of a firmware update that will fix this anytime soon?