If you are good with those Old Timey homemade horseshoe/chain/ring type puzzles, you will be good at getting both of those hinges in at the same time.
Work alone, you don't want witnesses to all of the cussing, and you want to be able to lie about how much of a "piece of cake it was to put together." If someone catches you in the lie, tell them that you didn't get to fish enough last year. (Lying about fishing is always expected, tolerated, and nearly mandatory.)
Hope this helps.
Carl
