Incline Cable Flye.

Cables fix the dead spot. At the top of a dumbbell flye your arms point straight up, gravity pulls straight down, and the tension on the chest more or less vanishes right where you are squeezing hardest. A low pulley pulls sideways and up instead, so the chest stays loaded through the whole arc, the contracted top included. Constant tension is what you are buying when you choose cables over the free weight version.

The crossover at the top earns its place in the rep. Because the cables let your hands pass the midline, you get a harder peak contraction than dumbbells can give, where the bells would just collide. Let one hand drift slightly over the other at the top, swap which one leads each set, and actually squeeze there.

Setup is finicky and worth dialing in. Set the pulleys too high and you turn this into a high to low movement that hits the lower chest. Keep them low, put the bench around 45 degrees, and sit far enough forward that the cables track in line with your upper pec. A steeper bench works here than it would with dumbbells, because the pull arrives up from the floor rather than straight down, so the upper chest keeps the load instead of surrendering it to the front delt. If the angle feels off, it usually is, so fix it before you load up.

Think of it as polish on an upper chest session. Once the heavy pressing is done, run it for 12 to 20 and chase the squeeze rather than the load. It sits perfectly next to the cable crossover on a pump day, since both earn their keep from constant tension.