Does any one with a" lieca 5000" coverslipper have a problem with air
bubbles forming after the slides dry?we have tried draining them ,we check
the mountant volume and we dry the backs of the slides. we are at wits
end,there is no pattern, it doesn't happen every day, but most days. the
bubbles are not visible until after they have had time to dry (4-24 hrs). 
any suggestions would be appreciated.
Thanks, heather