I just partially won my fight with a brinks shrouded padlock, not a disc, it had and americanlock keyway, and six pins, the the 3 and 6 pins were shallow cuts on the key and proved to have deeply cut spools on them, I haven't taken it apart so I learned this by its external responses. Ultimatly I found that the #6 (tip of key) pin was the last to give in, and I was using a handmade steep diamond pick_____________/\ a lot like that to rub under that pin while trying to put as little tension on the torkylever as possible to get it to set open, Part of the trickwas to get a light and loose enough tension, and since I was holding the lock in my hands, I found that I couldn't do it with a finger on any of the tensor except for the part closest to the keyway. If you put a tension wrench between two fingers, and try to push on the far end of the lever with, oh, a feather, or a piece of paper, you will get an idea of how much leveragethis thing has, the shorter the lever the less the pressure,
also, the steep diamond pick, as I posted in a different thread becomes less efficient as a cam to lift pins than a more oblique angled one, but the less effecient it is, the more sensitive it is to the hand in feedback on the resistance it is encountering, also, the steep diamond puts more cam surface in a shorter space under the pin,so it is affecting the adjacent pins less, Such a pick should be very well sanded because the ineficiency of friction from a rough pick adds nothing to the mix, and makes it harder.
