2007 Jinma tractor 284 was leaking water, replaced radiator, water coming out blown freeze plug. Replaced freeze plug good compression, then gunk coming out engine breathing tube on right side of engine. Got new head gasket,(though old one didn't look blown) and thermostat top (was chipped) and gasket, replaced them, now water coming out into pan plug. Have not started engine again. The head gasket and block appear to be okay, but we don't know for sure. Any suggestions before we throw in the towel?