On Tue, 29 Nov 2016 11:26:33 +0000
Mike Tomlinson wrote:

You must make sure the glass is completely spotless and grease-free
with any traces of old glue removed, and don't use a cleaner that
leaves a residue (e.g. meths)

If there's any there to tempt you, you could always drink it...

--
Davey.