Hi People, Would someone please clarify a quick question on carding. Partner and I are defending a 1NT (15/17) open by opps. Partner leads hearts and we take first four tricks. On the 5th trick partner continues hearts and I signal a dislike in clubs. Partner switches to diamonds by playing the 8 and I am holding K,Q,J,10. 7 and 5 diamonds are in dummy as declarer has dumped a couple of low diamonds against the earlier rounds of heart and I play my King and declare wins trick with Ace. We played the remaining tricks and at the end the of the hand my partner stated that playing King of diamond on the 1st round was bad play as this suggested that I didn't hold the Queen. From memory my partner said that I should play the Queen on 1st round. Is this correct? Is there any particular diamond I could play with no agreement that would intimate that I have an honour sequence. Comments appreciated.