I just got home and it seems on some of them , where the factory put them on foam, at least on 2 chunks from the few I looked at, it seems to have skewed the pins slightly
It's an easy fix , just push the plastic part of the pins gently with a bit of wood or something and make sure they are all at right-angles.

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- IMG_2660.JPG (417.22 KiB) Viewed 2190 times
Sorry about that

I will try and find out what factory made them last but its probable i've already switched, if not I will tell them to be more bloody careful in future!