Yes, its longer than the opening (because the post was not in line with the opening and I didn't want it to swing through the other way), yes, the post is not level, yes, I should probably not have used an existing fence post, no, I will not be fixing it. But look at the fit on the diagonal. MINT
Nice heavy hardware! I‘d be tempted to add a wire, with a turnbuckle, going diagonally the other way. No matter how solid my gates start out, they always seen to eventually need some additional support against sagging.