Hi James,
That sounds annoying, but at least you'll benefit from it on their dime!
I recently did a large order from Amayama, as I'm having the sills welded on my NA, so I bought all new clips, screws and the sills themselves. However, i've just had a look and they only seem to have the LH roof drip side moulding, so it's not much help on this occasion, but I'd bear Amayama in mind if you need anything in the future.
It's also worth speaking to your local Toyota parts dept, and Keron from Extreme performance to see if he's got any of the parts. Failing all of that, at least Mike has found a place to get 3 out of the 4 bits!