Calling the King: Puzzle M14

KR-M14 Puzzle

Your group plays Kontra. P1, the Forehand, plays the Call, calls the King of Hearts and announces the Pagat Ultimo. You are P4, and you hold the Skus and the XXI.

P1Forehand and Declarer

Your hand

SkusTarok XXITarok IXKing of SpadesQueen of SpadesNine of SpadesCavalier of DiamondsThree of DiamondsTwo of HeartsFour of HeartsEight of ClubsTen of Clubs

You kontra only an item you can be sure must fail. Do you say Kontra on the Pagat Ultimo?