I have a Kwikset doorknob/lock on exterior of my out-building. Today I tried to unlock the door with the same key(s) I've been using and the lock won't unlock. The key turns both directions but the handle won't turn. Is it possible that some part of the lock broke inside? When I try a key NOT made for this lock, the key won't turn. My correct key will turn, but the knob still won't. I sprayed some penetrating oil in the keyhole in case a part had frozen up, but that didn't help. Any suggestions as to what might be the cause? I live way out in the country, so a locksmith would cost a lot. It would be very difficult to get into this building in another way. How would you go about getting the door to open?
Thanks, Greg