I have TWO large bay access doors that are under my one slide. They came with piston assist devices, two on both doors. I have just "removed" all 4 pistons. Why? Well, both doors were limited to opening no higher than just below the bottom of the slide to prevent damage if the slide was accidentally opened/closed while the doors were open. This arrangement required you to always get down on your hands and knees to access the bays, even when the slide was closed! A definite PITA. Now I have a dowel cut to the right length to prop the door open IF the slide is open......and the BIG improvement, I have another length of galvanized water pipe with a rubber crutch pad on one end to hold the doors wide open when the slide is closed.....this is a GREAT improvement!! Rook.