I can answer some of your original questions. These songs were unreleased during the Cavaliers time at RCA -
1) "It's Guaranteed" - recorded Feb. 23, 1967
2) "Ooh, It Hurts Me" - also recorded Feb. 23, 1967
3) "Without Someone To Tell Me" recorded - July 18, 1966
4) "We Go Together" ( A remake of the Moonglows song) recorded with and without a rap intro
All info is from these Kent CDs- "Rare, Collectable and Soulful Vol. 1 and 2 and the 3 Pied Piper CD's-
"A New Concept in Detroit Soul", "Follow Your Soul" and "Finale" .