3 SPOOLS INSIDE!!!!!
You obviously never tried an American Padlock or regular old Assa ehh mate?

haha
IF you want a tick, Crank the tension, when lifting the first pin let off so you don't bend you pick. After it clicks, Crank it again.
Repeat this from front to back, Back to front, or whichever way makes a feel gitty, And it will open.
The reason its hard is there is a spring loaded plug, so estimating or keeping constistant with tension is hard. Not a bad lock, I still say if abus put a spring loaded plug on there original... would be a much better lock
[deadlink]http://i60.photobucket.com/albums/h17/Locknewbie21/LockNewbie21Sig.jpg[/img]