When I am using W shaped valley flashing and my two valleys meet at the peak of the roof, how do I flash the top so as not to get a leak there?

It is a proper cutting and fitting precess, kind of hard to explain online.

One side needs to fit the other side,overlapping by, lets say, 1-1 1/2 inches, this also includes the w section, overlap any connection by at least 1 inch.

If the ridgecap is going to cover the valley top, cement the ridge heavily and run the cap over top, remembering to nail closer to the center on the caps which sit over the valley metal.

Ken