How to pick old (dirty) locks?
1.) Serrated Pins (there is a Schlage lock that I picked once by luck - but have been unable to duplicate)
2.) OLD and grimy locks
It seems when I feel around inside these old locks that the pins are sometimes sticking a lot, or are very gritty. I suspect this is just from old age, rust, dirt/grime, and possibly wear on the pins themselves from a lot of use. However, I have found that sometimes even standard locks (no security pins) give me quite a bit of trouble before I can get them open - and there have been some dirty/rusty locks with security pins that I have been completely unable to open.
Does anyone have any tips or tricks to fix this? I have heard of squirting WD40 into the lock, but that seems to work only slightly. Any advice would be appreciated - abou the old lock issue OR about what to feel for with serrated pins. Thanks!