Allo Steve, nice purchase

i got my cush drive rubbers changed under warranty, they were a lot worse than your photo tho- they'd started to turn back into oily putty. i would recommend the mod that tony suggested - it works.

Aye, the plug spanner you have sounds like the original - simplest solution? a hacksaw. chop it down to about 100mm long and drill a new hole for the lever bar, job done.

Pete