I replaced my front head because of a valve issue and of course used a new head gasket. I torqued the bolts as required by the manual; tighten each time in noted pattern first to 25.8 ft-lb, then loosen each 1 full turn, then tighten each to 14.8 ft-lb and tighten a further 90 degrees, then install smaller 3 bolts to 86 in-lb. After reassembly, the coolant is leaking into the exhaust. Has anyone experienced this and any recommendation to solve? I do NOT want to pull the engine again after getting it re-installed.