if the plug turns, but hard, use a small screwdriver, as the weight of the door may be resting on the bolt.
Tensor fit is very important, My recent playing with the shrouded brinks padlock, I found that only one particular tensor would work, it is just the usual blade, but wider and thinner than the others, and it may have a different springyness to it but that is not what matters in this picking.
because tensors can easily become bound in the bottom of the keyway, I have been thinking for some time of putting some sort of extra piece in there to help the tensor fit, such as a small round wire or nail that will fill the space that allows the tensor to turn to far before gripping. Every blade tensor that fits in the bottom of the lock will drag against the immobile cylinder wall somewhat, You can see this when you get a lock that was very hard until you use some sort of tensor that does not even touch the cylinder wall and suddenly a lock that was difficult becomes easy.
