very light tension, it did manage to get stuck 20 degrees into the turn, must be a spool or the mushrooms they claim are in there. Nevertheless, it was open fairly quickly.
I took it home and cleaned it up a bit with some wet 400 paper. Here are some pics of the lock and that paracentric keyway. and yes, it was a pain to get the pick in there, so a hook wouldn't work well unless it was a slimline. The back and fourth raking I did did not require much room in the keyway, and I didn't need no stinkin' slimline

The lock is missing the plastic heel with ABUS logo, I did not remove it.
Hey mods,
Is there a section somewhere where we can put lock pictures in Alphabetical order by manufaturer and model, so people doing research can quickly visualise what lock someone is typing about in a post?
Thanks!
Squelchtone
full view of Abus No.41 45mm:

heel view:

Painted keyway to show keyway and pin positions.
Keyway is yellow, the red is the first pin in the keyway.