But having succedded on all sorts of cylinders (and now starving and cold wanting to come in and stop experimenting) I have just hit on a snag. I've realised all the cylinders I've opened have gone counter clockwise. Having gone to show my new prowess to my dad on our front door, i realise counter clockwise won't pull back the latch, and i can't get the bumped key out to insert a plug spinner without first re locking the cylinder

I cannot for the life of me bump the cylinder clockwise. Is it just the habit and style I've got into, and is it just a case of repracticing and perfecting my style. Or do some locks bump easier one way than the other, the same as picking?