Thanks to all. I was unable to respond for several days.
I've always loved this song. I think it is officially the last Doo Wop song (not counting reissues, tributes and such. If you had asked me I would've sworn it was early sixties but it was actually released in 1967.
Wikipedia doesn't have much information about the Casinos, too bad.
I'm still working on it but the overall sound sounds right. I'm using:
Amaj7 //F#m7/Bm//Bb7#9
and it works. Changing the A to A Maj7 made a huge difference.