first of all site rules say that you are not to pick a lock in use!
what happens if you break it and cant get in.
and that does not say not pickable does it,of course you can pick it,it may be that it has sercuity pins in it and it proberly has,i surjest you get one that is not in a door to play with.
look at this link
viewtopic.php?t=17879it means you get the top pin stuck at the share line and you need to go up higher.or you may be picking them to high,very light tension is needed to pick a lock.
really i sould not be helping you at all as you are picking a lock in use,but if i do not explain you will do it anyway.
and if you turn it 180 you may get pins falling out,as people keep saying i have not had it happen to me but if it does then the lock will nolonger work with keys or picks
viewtopic.php?f=3&t=47988that is what happens
so what have we learned do not pick locks in use(or at least don't say you are doing)