I'm currently in full Grand Funk mode, I bought the two new boxed sets "Trunk of Funk Vol. 1 and 2" and that has all their outpost save for the Zappa-produced Good Singin', Good Playin' and the 8Oies stuff with Dennis Bellinger. (Plus of course not the Flint album the others did without Farner.)
The way Schacher's "bone-rattling bass" (Homer Simpson) was mixed loudly on those first six Terry Knight productions, I'm sure Mel either bribed or had sex with him on a regular basis.
Schacher was really the hidden virtuoso in that original three-piece. His bass playing defines "organic".