Like Geek says, Get better tools.
Maybe if you try putting a bit of a squiggly shape in the wire?
Or at least not rake it with a hook.
Maybe see if you can turn your bit of wire into a shape sort of like:
@@@@@@@@@------------------Handle----
or even:
@---------------------------Handle-------------
And use a quarter of the tension that you are using.
Are you sure it is your lock, because the only toilet wafer locks
that I can think of, are in public toilets, locking up the toilet paper.
.....You're not trying to pinch dunny rolls, are you?
