Henry ....
I have read, maybe here, that use of 574 works well if you can't remove 100% of old sealant. The new 574 merges with the old stuff.
Given that no matter how hard you try you can't remove 100% from both the cam tower and the heads (still installed on engine) how well would Yamabond 1104 work? I ask because I am in the middle of resealing a leaky cam tower. My bad, did not put enough on and it leaked in one place pretty bad.
