My 351W was are rebuilt. It has a TF upper intake and TF heads. There is a very slight trickle/drip of coolant that forms where the head meets the upper intake. Driver's side front corner. It then pools on top of the water pump area. Maybe like 1-3 ccs. Not much really. Previously, like maybe 2 months ago, I retightened (not crazy tight, don't want to strip the aluminum head) the intake bolt that threads into the head, and the leak stopped. Yesterday it was doing it again. I retightened that bolt and I think it may have stopped the leak again. Maybe I should try some blue locktite? I'm not sure if that bolt is walking out slightly over time or not. Is it a huge job to remove the upper intake and reseal or regasket the intake-heads area? Thanks.