The personnel on "Heart Of Stone", from what I've gleaned over the years is only Chris, Mick, John & Billy Burnette. I'll have to play it again to hear the voice you hear as "Stevie".
(since I haven't listened to it in a while)
Lindsey's voice on "Nothing Without You" DEFINITELY isn't as prominent as, say, his backgrounds on Tom Petty's "Walls (Circus)".
