Just started this hobby with a box of of old locks off of ebay. I'm having some small successes so far and quite a lot of fun.
I had been working on a Yale lock and some of the pins felt gritty; I'm not sure if it really is dirty inside or if maybe I ran into some security pins. I'd like to gut the lock and take a look at what's inside but I'm not sure how. I didn't see any screws hidden away, including under the shackle, just a tiny pinhole on the bottom. Is that my way in? Or, are there locks that are not designed to have the core removed?
I poked around YouTube but the gutting processes I've found typically involved screws.
Thanks!

