After the suspension compressor and valve block knackered I have started my fix that has cost nothing as it's just a run around car I'm not to bothered I have used new car tyer valves free from a well know tyer fitter and some airline hose that will be connected to each bag I have fitted the n/s/r one already and I'm impressed it's stayed up all I do to pump up is my electric car pump will do the other three tomorrow