Have you come across the boxed Bud Nut impact driver sets currently available from several european mv parts dealers? £25 - £50 will buy you one. Very useful - contains socket, extension bar with square female end for inner nuts, impact hammer (rotary action), torque reaction arm to allow removal of the outer nuts from the inner nuts.
Highly recommended!
p.s. I tighten nuts up until just before the moment they go 'bang'! :cool2: