I must say Gilly, your posts were absolutely dead-on.....
It WOULD have been much easier if I had seen the new one before I attempted to take the old one off.

The new one arrived and it all made sense.....

It's amazing though. It took me 1-1/2 hours of wrestling with and swearing at that "thing" to get it off, and 10 minutes to put the new tensioner on...... :-(

Works perfect now, and "quiet" too.... :-)

Thanks for your help and guidance....

Barry

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Barry