@ India four two......You have a lovely daughter.......I'm jealous of your book
but, I have a set of Robertson plug-in screwdriver tips, so there!
IIRC, the Philips was developed in Canada ,for assembling washing machines, as flat, slotted screws would allow the driver to slip out and skate across the paint, scratching it......overtightning and shearing the head off was another problem......the Philips was designed to "cam -out"if overtightening was attempted........Pozidrive was developed to work the opposite way. IE to not slip at all.
ADAM ..... Sorry to sidetrack your thread.......so sad to see those lovely, polished aircraft,but with perished tyres and knowing they would be unviable to bring up to standard again.......What about shipping one here and gettingit on a Permit?
