Re: Excuse me, m'am, but this ain't what I ordered...
my grubee runs really nice, so i wouldn't worry about it. slant head means the spark plug is at an angle rather then straight up.
the only thing to worry about based on my experience with grubees (and i suspect all chinese engines) is that the threading for studs need to be tapped further, mine were poorly done. and most of the studs/bolts/screws/nuts are better off if replaced (agin i'd bet that's every chinese kit)