Hi Steve, if you have a good look at the ends of the pins I think they will have a "split" down them. If you gently insert a knife blade into the split you can spread the ends of the pins to give a better contact. Worth a try.
Tony.
ps. I mentioned a knife, you are allowed sharp things?

Hope you get it sorted mate.
Tony.
ps. I mentioned a knife, you are allowed sharp things?

