ok fellas ... i had this problem and got it fixed
first thing its a stupid mistake but a lot of people do this did you locktite and do three torque sequences to head. make sure if not theres no compression holding in the coolant.
if you did that then you have a blown head gasket/ o rings.
but most likely its the first thing i said i had chris on here help me out after i re torqued it all it was fine