problems with castline formfill. when trying to enter MCB details, i go to the box and tick ,say, MCB type B, 6KA scc, no option for rating, or BS no ( 60898 ) and then it puts "typeB" in the BS box, and insists that max. Zs is 1666. also, in the top right of the screen is a fill down option. this won't do anything. any ideas??