Weird Schlage problem.

[FiapFiak]

I'm trying to pick a Schlage right now and i encounter this anomaly. (This schlage, i'm not sure about the series, it's not an everest, but The key says it's a Schalge E keyway.)

Anyways, my problem is this:
I can rake it, and single pick it counterclockwise. However, it doesnt open counterclockwise. It only shifts around 10 degrees and stops. (This is normal, as if i put the key in, it will only shift 10 degrees as well) I think all the pins are properly set, because when i remove all the tension from the wrench, none of the pins fall down, and it does not turn back to the neutral position. When i turn it back to the normal place, i can hear all the pins fall back down.
I tried to use a plug spinner, but i dont think there is enough distance for the plug to spin as it only shifted 10 degrees, and there is not enough momentum (someone correct me on this if i'm wrong? maybe i need to make a better plug spinner? - i'm using tshock's btw)

Now, when i try to pick it clockwise, I can only lift two pins. When i try to go for the 3rd, it doenst seem to set, or either that i'm using too much/little tension. (I might be feeling it wrong, just be warned) However, it doenst make sense, i can do it counterclockwise, but not clockwise. This isnt a high end or new schlage lock, it's fairly old. Is this a characteristic of a security pin? Or is there something I'm not doing right? or is there some tricks to schlages that i could not seem to find?

My tools used so far: snapper pick, plug spinner, bogota rake, half diamond, tension wrench is just a normal L tension wrench put into the bottom of the keyway.

[lockpickroy]

It is possible the lock is damaged

[melvin2001]

it almost sounds like a security pin but it would rotate back to the neutral position when you let go of tension. my vote is that the lock is probably damaged, or just old and crusty. try taking it apart and see what you can find out.

[maxxed]

It is possible that you have a classroom function lock. Is there a turn button on the inside knob?

[FiapFiak]

Thanks for the replies so far:

The lock damaged? It is possible, tho doubtful. It turns alright, but it could be something on the inside... i'll not disect it just yet.

I dont think it's a secruity pin either, as melvin said, it would have turned back, and i dont know of any security pins that would do this, unless i failed to learn something. Nor do i think security pins only work one way.

As for the guy who made another post, i doubt i need to lube up the insides, nothing really is sticking on the inside.

But the classroom function i never considered. How would this change things maxxed? It does act sort of as a classroom function lock. I can lock it/unlock it from the inside by pushing the button (not turning button), but if i were to close the door, it would change the lock state back to unlocked. I can only lock it from the outside with a key.

[maxxed]

A classroom function lock will not have a button on the inside. The lock is locked or unlocked by making a full rotation with a key, one way to lock and the other way to unlock. It was a possibllity that you were hitting the stop in the direction being picked and the tension of the mechanism was making it difficult to pick the other.