I just replaced me head gasket in my 1989 fourwinns 160 freedom with a 3.0 OMC. I had a very small leak so pulled the head had it resurfaced cleaned and inspected the block really well (no cracks) put the new gasket on torqued to the 90ft lbs spec in three stages of 30,60,90#'s, fired it up now it is leaking worse then before. Is it a possibility that it could have been caused by not having enough thread sealent on the head bolts?? I used the permatex threat sealent but followed there instructions which said there was no need to over use it, I am hearing som people use Ultra Black RTV is that a better choice?