Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Or maybe it's just Bol**cs. The same guys used to listen to Frank Zappa and the Incredible String Band for gods sake !Cheers ...AshD
You can helicoil the spark plug hole, but never in situ, the swarf from drilling, and the tab from the helicoil would go straight into the head . . .