May be a dumb question, but oh well. I own 2 AD trucks, and neither have the rubber floormat in place. Was the floormat just laid in the floor and then lifted up when the battery needed to be charged/replaced/etc. or did you have to take flanges loose to work on it?
I am considering building a new battery tray that will accommodate a larger battery that will fit through the hole. But that is another conversation.
