I recently purchases a beautifully clean '87 GL-10 Turbo equipped with a working Pneumatic Height Control System. Works great, feels great, and looks great...
BUT (those of you who are familiar with the system were waiting for that but...)
I noticed that when I'm riding on the higher setting (when the system is engaged and the car is fully raised) and I turn RIGHT, there is a knocking wobbling sound coming from the front right wheel. Once I get going straight again, the sound tappers off and goes away until I turn right again.