Thanks Spitfiremac. Drilled the holes. Squirted in the lubrication. Wipers work a treat. One little bit extra I did was to seal the holes with a blob of silicon bathroom sealer. Don't push it down the hole, just blob it on the surface so the hole is covered. You will need to remove it next time lubrication is needed. Oh yes. You need to clean the surface to get rid of all that lovely lubrication you've just squirted everywhere otherwise the silicon wont stick.