> > > You'll also need a 4mm Allen impact driver. Yes, there is such a > > thing and yes - you > >really do have to hit it that hard. > Can you suggest sources for a 4mm Allen impact? Mine came from Hayway Tools in Kettering. -- Phil Payne http://www.isham-research.com/quattro +44 7785 302 803 +49 173 6242039