Great info here...thanks...I am a novice looking for direction regarding the air suspension system on my 83 venture royale. The local shop passed on doing anything with it, so I may have no recourse but to take wrench in hand. Where to start? Any tech threads that might shed some light? Where are the weak links in the system? (places to start checking) Are there parts out there? Is the air system necessary, or can a shock sys. from Progressive or some other supplier replace the air sys?