I'm wondering if anyone can offer any advice for proper SPP with five and six pins. When I pick a cylinder keyed for three pins, there's nothing to it. I don't just mean it's quick or easy, I can feel out each pin individually, know which are set and which is binding, and pick it properly. I can see the whole lock in my mind and know exactly what's going on. It's a good feeling.
When I try five pin locks, though, any time I go to manipulate the back pins I seem to do a serious number on the front pins. Sometimes this works out to my advantage like when I set pin 5 then 4 and suddenly the lock opens since I inadvertently set 1-3 in the process. Other times its detrimental, I can overlift a front pin with a serrated key pin (Evil American locks) which then false sets high.
In any case, it destroys my mental picture of the lock since the front pins end up being a muddled grey area which I have to check later and hope I didn't false-set too high...
I'm using a pretty short hook, but the set of picks I got is pretty basic so it's my only real option for SPP and moreover, I've heard that larger hooks don't necessarily help since you end up disrupting the front pins when you insert and remove it (provided the keyway isn't huge).
It's especially a problem when it's a very shallow back pin behind a deep front pin...
Thanks for any tips.