I've decided to go ahead and accept that there's something wrong with my front-end. When I got the car a few months ago the right side clearly sat lower than the left. I shimmed the right rear sensor and brought it up to be level. I never did go around the car to measure the height to make sure it was where it should be, but I figure it's pretty close. The car looked right. All that rattling in over little bumps at lower speeds must be a worn out bushing or two, right? Now my right front sits lower than the rest of the car. There's no sensor on that side to adjust. At high speeds, after the car lowers itself, it seems to sit more level. I've never heard my compressor that I know of. I've never heard hissing anywhere. Think it sounds like a bad shock or something else? I get no warning messages. Waddaya think?

 

The ASM controls the front two air springs as a single unit, and has a single sensor to do so. Rear air springs are adjusted separately with a sensor for each one, (left and right).

In my opinion, the "adjustments" you have made to the sensors are not likely to correct the suspension, it is, unfortunately, a job for a dealer or independent who has the kit to program the ASM. I may be wrong, though.