My knee panels are screwed on but that may be because I used to have the luxury leather covered ones. However there is an easy way to remove the stanchion without touching the knee panels, but you will need to remove them 1st to fit the mod. Replace your scuttle retaining channels, 1 either side, with the up-market ones which have captive nuts for the stanchion fixings: £28.20 a pair from CC.