Hmm, you see the post redwngr made? He has the actual way to recalibrate it. Like i said i havent tried this yet since i havent got my vent visors yet ive just read about people having issues with them and seen in a different post about people doing the recal and their problems went away.
Pretty sure if you roll the window up and hold the button in the up position for like 5 seconds it recalibrates the auto up functions force so that it wont go back down as easy with the in channel visors. I know ive read it some where on the forum just dont remember where. Ive been going to get the avs in channel ones for my truck but never have yet.