Just finished replacing my Disco 1 door lock springs on all 5 doors. What a saga. I saw somone else on here saying it took him 20 mins per door - maybe on the back doors - but there's no way you can do those bl&^%$dy front doors that quickly.
It didn't help me that it was 36 degrees C on my driveway today (apologies to all my Northern hemisphere friends!)
Oh, and the instructions with my springs weren't much use.....you were right 666 george.