On commute home last night had a loud pop .I thought I had run over a drink bottle or something (I was watching a taxi all over the place andon his phone). Bike ran fine rest of trip no high temp or power loss . Got home parked it kit off then put her up on the paddock stands and optimate on and oil over side of fairing quick look and noticed front left cam half moon of gasket poped out. I strippd bike cleans refitted and checked levels breathers ECT all fine ride in ok this morning and after 13 miles it' popped again. Being in garage till 2 am for nothing is not helping my mood.