Couple of questions if anyone can help? I have a 2021 adria compact supreme which is fitted with HPC levellers (brilliant bit of kit by the way). I was thinking of fitting semi air to the rear but I’m not sure if the adria is on a Alko chassis or not, is there a easy way of telling? Also if I fit the semi air on the rear, is there a possibility of over extending the air bags when the levellers do there extending. Thanks