ok then people who tow caravans i just picked up my p38 dt and it has a swan neck type tow bar fitted detachable type just wondering if this is compatable with the alko tow hitch on my caravan its a 50mm ball but they all are .need some answers pretty quick as going away friday .plus a bit of advice on anything i should do or not do regarding the air suspension .or is it just hitch up as normal .thanks in advance