Got the full set of yellow Bilsteins from Paddock. Including the steering damper. With a couple or three hundred miles on the clock preliminary assessment is that they are stiffer than what came off and more progressive. Damping increase with larger suspension movements is noticeably more aggressive than standard.
Which may annoy the living daylights out of me when I finally get things sorted.
Its still not right. Stiffer damping seems to be covering up the underlying problem.
If it were conventional car with metal springs I'd say the symptoms point to worn out way too soft springs. But I don't think that's possible on a P38 as spring rate is effectively set by the pressure in the air bags which in turn is defined by the ride height. Way I see it so long as the car can hit and maintain the right ride height there must be enough pressure in the bags. Certainly my three amigos are behaving just fine and waving the tape measure around between arch and wheel centres suggest its about right. A little high perhaps on standard, maybe 1/4 - 3/8", but I'll sort that next time I can get on Mikes nice level barn floor. Best part of my drive puts a canter wise tilt of about 1" across the car so I guess thats close enough for the spacers to work just fine. But its so much easier to play with spacers with a chassis lift instead of futzing with a jack doing one at a time.
Steering isn't happy either. Seems to have picked up a bit of play in the system and car doesn't wan't to run dead true. Time to get my steering box rebuilt so I know I have a decent one fitted instead of that second hand one of unknown history. Local(ish) land Rover guy can get it done for £350. Lot more than the E-Bay exchange mob but it will be the full monty not a wash'n seal jobbie. If I'm going that far hafta wonder if it makes sense to dump a fat £100 into an OEM steering shaft too. I know I tend to dump more money into new parts than most folk but at least then I'm pretty sure it will be right.