Some Hondas just had a coarse screen on the suction side of the pump that was not accessible unless the trans was split. In that event, I'd add a spin on or inline filter ( looks like a fuel filter ) to the return side of the trans cooler. The inline filters are used by trans shops to prevent material from leaving the trans cooler post rebuild and causing problems.

Spin on filters are used in hydraulic systems / larger trucks / machinery.