In reply to gilliesp:
It's really variable. I've used each of the UK resolers in turn until a bad job has pushed me onto the next one. Sometimes it's all good, but often as not they have turned them into a clumpy pair of clown shoes, totally changed the last so they don't fit anymore, or they have delaminated, been sent back, and then delaminated again.
Think I'll probably not bother trying again and just buy new.