I found the best way to get the covers on with the least amount of wrinkles was to asemble them onto the foam backing and hog ring them on. After that's done you can slide the metal frame into the seat cover (this works for the seat back far easier than for the seat bottoms) Here's a shot of the hinge assembly: those chrome push-on retainers are bear to get off. You have to pry them into oblivian before they release. Amazingly, Home Depot had the exact ones in their hardware aisle for 45 cents each. (Note to self: when you do the other side don't try to hold the cap in place while hitting it with the large wooden mallet pictured in the previous photo. OUCH!
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