You can swap your sensors from side to side. They then use the "other" side of the sensor. The sensors are (all?) made the same, the variation is really the length of the "rod" that connects it to the RR.
There are two potentiometers (like a volume control) with their own wiper inside the sensor. I have a photo of the insides of a classic sensor, but it's not available to me at the moment - it's at home on my pc.
If you are mechanically and technically able, for MUCH less than 3000 you can buy the
Rovacom lite and a pile of software from
Blackbox Solutions Ltd - Designers and manufacturers of the best vehicle diagnostic tools.. You can then do your own maintenance with relative ease. The EAS is SIMPLE to repair when you have the equipment. I've done two now. (My previous 94 classic vogue & my current P38 vogue). They each cost me about AU$100 for parts to repair the valve block and compressor, add AU$600 for FOUR airbags and my labour which is free to me
Generally speaking, the other bits, like the solenoids, the driver pack (the bit that is "potted" in some plastiky stuff) and the EAS computer don't fail. They can of course be a part of the problem and may be expensive to replace but this is not the usual fault.
Personally I would NEVER change from EAS to springs. I have found that most Landrover dealers are too scared of the EAS or lack the knowledge on how to repair this SIMPLE system. In so doing they have almost single handedly deterred many prospective RR buyers.
It's not THAT hard!
Hope this helps.
I have some other photos I can post if you need more info, let me know.