Just to say irrelevant of the bass, Tim is a legend to deal with!  Im the VERY happy owner of his old sadowsky and it was a pleasure doing the dirty deed (as it were).  I went round his, got to play it for a good while (saw the Zon among his collection), had a good natter about basses (and cycling...), got a cup of tea...  the service was excellent, as is the bass, as is Tim!  A fully satisfied customer. 
 
H 
 
P.S. Let us all know how you end up popping the question! (...and the response!)