250r leaking water

[ants84olds]

I just got the 250r back together after the recent blow up. I put the head on and filled it with water and it poured water out of the head down the sides but not in the cylinder. I took it off and checked it and reinstalled and torqued. Same thing massive leak. I got some gasket shellac and put it on and it seemed to work. Now it barley leaks when its hot. I melted the exhaust side of the piston could that have warped the head bad enough leak that bad. I think I need another head. Does anyone have another stock head I could buy.