If you want to play, fit a 200uf 63 volt 105C electrolytic across the power wires as close as possible to the driver pack and see if that fixes it. cheaper than a replacement pack.

Thanks Keith. Height sensors seem ok with RSW software plugged in. Just been looking at when you repaired a driver pack, daja vu or what

Could also be a height sensor. Driver packs can be fixed so if you replace it do not bin the old one.

Past 2 weeks back end sagging overnight. Leaks found in bags so they were replaced. Back end still going down. Diaphragm valve was leaking in valve block so decided on full rebuild. Was given a valve block to rebuild with full kit from XR8. This...