Why do I think my favorite piscatorial prey has just suffered an insult
. Roger's right, Fred - I'm pretty sure the sensors are on the street side. Note Roger's photo with the foam support under the tanks. They taper down toward the street side to help facilitate emptying, so I'd guess the sensors are on the down end. That white water bay panel doesn't look all that much fun to remove, as I recall Ed Buker can attest to. Admittedly I haven't carefully scrutinized mine with such intent though, and empathize with Roger's thoughts.
Roger - if you go to the club's Private BAC Member's Only section off the Home page, and click through Links to the Coach Assist, you will find several Aladdin documents there, including (out of alphabetical sequence for some reason) a Troubleshooting manual with in-depth calibration directions. The simpler methodology, though, is from my owner's manual pp. 178-9 below. Click the paperclip icon/text below the image to open it in your computer's photo program for viewing and printing. If you'd prefer, I can scan and email you page images that may be more clear - let me know.
Some have had success using bags of ice cubes and/or detergent with only a few gallons of water in the black tank, sloshed around with some driving, to free up the sensor. There's no guarantee that will work, but I'd try that before recalibration, as per Fred's advice that calibrating with a befouled sensor can make things worse. To that end as well, I'd make some effort to getting at the sensor behind the utility bay panel.
If you find any trout in there, be sure to only tell Fred
.
-Joel