Hi Guys,
Just thought I would thank you all for the help.
I have just finished the job and fingers crosses evertthing is ok. I did get acouple of drips but just tightened the nut a little. Still a bit nervous thoughand keep checking for leaks,just don't want to overtighten the nut. The old onewas a pig to get off but a carefully cut the insulation and then cut throughthe nut from both sides and eventually it came loose. Your help with fittingand not dropping inside was most helpful too. I didn't put any jointingcompound between the rubber washers and the tank,don't know if that is correctbut there were no instructions with the new flange. Just going to check onceagain and thanks for all your help.
Regards
DEMPSEY