Hi There! I don't have a MH at the moment but am dedicating myself to researching before purchasing. I have seen a number of posts here, there and everywhere regarding updating MH's to air suspension. I can see the logic in this, in enabling better handling etc. However, people say that the weight they can carry has gone up because of using the air suspension, but what no one has said so far is how do you find out what it has gone up by or indeed why does the air suspension increase the payload?