Glad that fixed it for you and good to get feed back.I have fitted my new dérailleur today, and all is working very well, so for what ever reason it was causing me a problem its now fixed. I would like to thank every one for the input and help.
It so nice to change gear and it just works.!
I hope you've thrown the old one out and not kept it "just in case it comes in handy" which is what I'm often guilty of!