Hi Anita,
slowly, slowly catchee monkey.....
This is a board with an international membership, and specialists in many fields.
Not all available at 24hrs notice, and many who merely visit occasionally. Answers can take days, months and sometimes years.
Be patient, and I am sure, some of the very talented and well-informed UK glass specialists present on these boards, will help.
Regards,
Marcus
(A Czech specialist, so about as much use to your enquiry, as a chocolate fireguard.)
