Ok then....mission accomplished, no broken tab and a nice clean hole with a shiny visible 'self tapper' threaded spike pointing back at me as I shine the MagLite down the hole.
For anyone who is prepared to lift their Sporan and jig on the spot...I'll send you a 2013 50th Anniversary Bathurst 1000 commemorative Pale Ale can...empty of course...hehe.
Off to the cave I go
Cheers
Gazza