CTTT APPEAL — whether findings that the defendant was not involved in residential building works other than as stated in the quotation and contract amounted to errors of law — costs — whether costs, including indemnity costs, should be awarded against the plaintiffs who had partial success in their claim against the defendant for defective carpentry works — costs order based on the plaintiffs' substantial delay and expense for a "meagre result" in a largely "unreasonable and untenable" claim — appeal dismissed