I have a STUV 7-lever lock, on a safe with a lost key, that I got from a scrapyard, and it is giving me (rather experienced Lockpicker, total noob when it comes to lever-locks) some headache.
I am using a 2-in-1 tool, and it seems to be having the right dimensions (the tensioning tool is nice and springy when it engages the last lever (Is that how you call that one?), it engages the bolt, and the manipulator tool can engage with all the levers separately)
Problem is: I have no clue what to look for, as I am picking
Things I tried:
*Checking for binders while ignoring anything that feels springy, using light tensioning - There are some, and I can manipulate them one-by-one, however, the levers seem to be all pressed down by a single leaf-spring that causes me headaches - sooner or later I run into a situation where all leavers feel springy, assuming because they are all aligned in a way that they all contact that leaf-spring, at that point.
*Just picking while trying to see which positions give off the most resistance, manipulating all others - Works relatively well, but the difference between a true set and a false one is very hard to tell, particularly because I have no clue what a true set really feels like
so yeah, any help and guidance on what to look for would be greatly appreciated, I can't wait to get this thing to open!
