Thanks h0ughy very kind of you ..... and of course straight back at you mate - many happy returns for your own birthday tomorrow, hope it's a good one for you!
Steve
(I was outside with the scope, and a brand new Telrad, and a brand new 10:1 Crayford, and a brand new laser collimator, and a DAMN full moon, when the clock ticked over 00:01 and my birthday started officially!)