Thanks for the fast reply - will PM jamesb.
Also thanks for the link to your pdf's - exactly what I needed for the time being as pitched a load of different WOW's for Christmas at the weekend and need to type up my handwritten notes into longhand before I forget how to decipher my shorthand, so had already done the sugar calculations etc manually, but for my next batch a spread sheet would be handy to have all that malarkey do itself automatically!