Sorry to hijack the thread but my mini was an mot fail due to the fact that I had coil springs fitted to the rear the mot tester said the were too lose? Ant thoughts anyone? Cheers.
I presume your rear is set up lower than the factory setting, so you need to either reset to the correct height or if you want to keep it low, cobble something up as this guy has. This is NOT something I have needed to do and you need to confirm yourself that this modification is safe for you.

the modification ive done to the hilos is to cut about 1/2" from the locating rod that slides into the hilo, then cut a oil pressure spring (from a cooper s) in half - then check (before fitting) that the hilo rod can still bottom out against the hilo when weight is put on it (if needs be shorten the hilo rod more)
this little spring will then 'pre-load' (by about 1/2") the rear parts when the car is jacked up and prevents the minitastic spring from falling out - once the weight of the car is back on the ground the little sping compresses and doesnt do anything.
hope this helps











