Hi people. Noticed my coolant level had dropped considerably the other week on my forged 4e. Ran some tests and couldn't find any leaks. I did notice that a fair amount of coolant had shot out the top of the expansion tank. Also ran it with the rad cap off and it will bubble continually. All of this to me points to head gasket. The engine, that was built not that long ago, was fitted with a 1.2 athena gasket. Have many of these failed before in a similar way? And should i set about getting the head off asap? Any help would be much appreciated.