Glad to hear you like the board. Sounds like everything was in the box - we supply the screws for the foil with the foils, since each foil brand has slightly different plate sizes, with different length screws then- that would be the Pedestal mounting hardware reference. The very first Sky Wing boards had those supplied which was a mistake from our supplier.
We have some good guides and manuals for our foils, but not for the boards, to be honest there is not really too much needed there to know, but if you need advice on settings etc, feel free to ask here or on any of our Social Media channels for foiling, here's a link to some foil guides:
The centre bump got removed yes, although the stock is somewhat mixed as some of the first boards had it, then user feedback was to remove it, really depends on when the Dealer got the board. It's a quite fast moving sport at the moment, so trying to adapt to trends in running production is a challenge.
The black plug is the vent plug yes, just remove it if the board is often left in a very hot car/during flying. Generally when I foil I put my board straight into a board bag on the beach between sessions, to avoid too much sun, covers on the foil wings too. They can expand in the sun being black (Fanatic), although that is rare.
Feel free to ask more questions here or on our Fanatic foiling insta channel! good luck!