This really is one poorly built fussed up mess of a front porch you got there Brother...Its like damn! If I woulda built that mess after age 10 I woulda kicked my own @ss just on the principal!...
I wouldnt worry about it though, I'd leave it 'as is' until I go to re-sell it to some other Hillbilly, just wrap a riff of 3" wide white duct tape around the top notch there.......Its not like you are using it for anything important anyway...so who cares if the deck has got a 6 pitch? If anybody asks, just sell the Water runoff feature!
I sure hope this awful Front porch was not your creation...I hoped you subbed it out to the local tech school kids...Whoever built that disasterous mess was either a Gyp Traveler or a total tree house tard...did they throw in a driveway blacktop in the quote?
The whole shot is one engineering abomination..I'd just move the hell on out of there if I was you, or, go with the garage door cables off the roof rafters and build myself a free floating "Sling Porch!"
It really is one damned old mess! ..Easiest thing to do would just be just pull the whole damn deck and everything right off of there and wall in that doorway with some scrap OSB and plastic siding, plant a few bushes if you want...take about a half hour...
Keep the flag though, its a nice touch and would work well on the lightbar of your Chevy truck at the Jawja Peanut Festival Mudboggin Event this Springtime right?