Bum... forgot to say:
You can't shim them, since they use a double-ball locking mechanism that is immune to shimming.
No way to bypass these locks NDE - but you could try bending 2 pieces of wire to 90 degrees and use one to turn the last disc (this creates turning force) and using the second wire to turn the discs to feel for the gates. I have done it on a Blackspur padlock and found it had no false notches so any feedback I received pretty much signaled I had found a gate.
That's about far enough... Not that it will be mentionred in the advanced forum, but because I can't say more in the public forum.
