you gotta kinda stretch them open & they pop up & off, a little tricky & not impossible to break a tab or 2 your first time especially... just avoid any marks on the edges & you'll be fine, worse case they do stil hold well if one tab happens to break, & if you have to, a dab of silicone at the tab on reinstall makes everything good again. remember, cold plastic tends to crack much easier so try not to do it when too cold...