Duane,
Well, that surely ought to get the water far enough outwards to not run inside via the top of the door.
My first thought was shock that you'd sliced through the molded "eyebrow", and might remove some strength... but there are still plenty of molded-in stiffening curves remaining, so maybe doesn't matter.
Did you continue adding pieces to the 'diverter', so that it runs clear down to the ends of the slit you cut?
And did you resin-patch the underside of the diverter-to-camper joint as well?... if you haven't yet, I've found that Cabosil [$15/gal from Amazon] works really nice to thicken resin so it doesn't run all over before setting. On my
U-Haul CT, I'd wet the surfaces with straight resin, then thicken the remaining resin with the Cabosil, and apply it... the thickened resin worked nice to form fillets in corners, etc.
'just my 2-cents-worth..........
Gary