Dick 'N' Int,
I hit the books in response to your answers and have found you are mainly correct.
Yes Max L/D is achievied at min drag. Min sink is a lower speed.
Intruder, read Dicks post re max endurence. It is achieved at maximun excess thrust which, whilst close to min drag, will be slightly different. You were also under the impression that min sink occurs at stall speed. Not so. I own an ASW 19. Its' min sink occurs at 47kts, its Vs is 34.