Hello gentleman, I'm new here(first post!) and you are by far the best community for hobbyist lockpicking. I've read dozens of threads in the past few days, and I thought I'd throw out a problem and see if I can get some advice. I bought my first set of lockpicks(southord mpxs-11) to just mess around and picked a few small 3-pin and 4-pin pin-tumbler locks. I recently moved to master locks and pick no. 1's, 3's, and 5's easily. For the most part I can do these in a matter of 10-15 seconds just going back to front, and then front to back.
I adopted an old master lock m1 magnum that I'm working on, but has sticking pins from dirt/grime/weathering. In the meantime I bought a brand new master lock 141D, with the intent on learning to pick something slightly harder. Looking at the key, pins 2 and 3 are deep cut, while pins and 1 and 4 are very shallow. Pin 4 wants to set first, but I can't set it without oversetting pin 3. Is it a pick selection issue? I've tried using two different picks, a small hook and small diamond, without much success. There just doesn't seem to be enough room to do it with what I've got.
Any suggestions?