I have a two post and prefer it over a four post any day. Makes taking a allen off a doddle. As for axle drop the shockers are more than capable of hold the weight of the axle. Front is restricted the radius arm anyway and I made up some straps that hook on the chassis for more extreme cases.

Ok, thanks. I've tested all the loom and also tested the signals from the ecu and that is all correct. Will see if I can track down another valve pack and replace it. Thanks for your help.

After code clear it read "solenoid valve lockup clutch monitoring (s/c to ground or o/c)" and " solenoid valve 1 monitoring (s/c to ground or o/c)" I'm using a icarsoft unit for Landrovers

Ok done that, no mention of valve 2 at all. New solenoid required?

I'm also having similar trouble although mine is stuck 4th and that's it other than reverse. It's giving "solenoid valve 2 check (S/C to +12v) on the diagnostic. Any suggestions?