Hello all. Ive been looking for a site like this for sometime. Found one for my truck and it is a super help. Now to my problem...My holding tank indicators are not reading correct. My black water shows a third full when empty which is no big deal but my grey always shows full even when empty. This causes problems especially in places without sewer hookups. Im figuring there is something on the indicators but I cant seem to get it off. Supposedly theres no way to take these sensors out for cleaning. Has anyone else had this trouble and what did you do to correct it? All advice will be appreciated.