I had problems with my dunkelweizen too. At nearly the last moment I decided to toss in a pound of German Vienna and then I busted over 90% again. I think it was at 1.063. If I had some wheat DME I would have added it for a weizenbock, but because the wheat was already near 50% and all I have is light DME I decided too I diluted it to six gallons to not be out of BJCP guidelines. I thought "more beer=better". Now all I have is a half gallon of head space. It looks like the Kraeusen just fit.