Thanks everyone
Many thanks for the replies - as usual lots of good information.
Lawdog - I've posted before about using the "search" function and have learned a tremendous amount doing so. It's been a hectic week so there I go and stick a new thread up on a thoroughly discussed topic. Sorry for the wasted bandwidth!
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"When they kick at your front door, how you gonna come?
With your hands on your head, or on the trigger of your gun?" - The Clash
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