If you like. It's a bit of unfair and unhelpful stance to take. However I think if that is the case, it demonstrates it is not that simple or easy to fix in all circumstances. And while I'm not claiming to be an expert or Einstein. I don't think I'm a complete luddite either. I'm a Software Tester/Engineer by profession (past 16 years). Used to build and overhaul light aircraft engines/props, grew up on a farm. And a car/4x4/Land Rover enthusiast. Have done lots of engine swaps, designed the suspension on my 88 leafer and completely rebuilt it, built a coiler 88 and modified plenty of other vehicles.
Hobbies include building RC planes & cars and amateur electronics such as building LED torches.
i.e. I'm not a complete numpty doing mechanical or electrical things on cars.
And as said above. I still own the vehicle. If you are willing to come and show me how quick, cheap and easy it is to fix. Then I am 100% willing and receptive to it.
Not calling you a duffer you are obviously very handy. However knowing your panache for off roading and modding things. Maybe you were trying to set the EAS higher than can be done. There are set limits for each height that cannot be exceeded. I don't know it's just a guess. If you have a P38 that rolls on cornering it needs new shocks and or suspension bushes. And i don't mean the stupid poly bushes either. Mine is rock steady and taut handling wise. I have looked at the tyres you say you have fitted and they do indeed fit into the pre 2004 speedo regs. However the lift you have put on your car makes it a lot more liable to roll in an high speed evasive maneuver. Sliding down the motorway on it's side at 70 MPH will not do it a lot of good.