Then it is strange to see a picture of a Bf 110 C (old color scheme only used until May, so refitted C-1 to C-1B, refitted early C-4 to C-7 or early C-7) in the Document "Bf 110 Bedienungs- und Beladevorschrift für die Abwurfwaffe - Ausgabe Juli 1940 - D.(Luft) T.579/2" with a SD 500 and SC 1000 on the belly.
Btw my source of info:
http://www.luftfahrt-archiv-hafner.de/
search for:
"Messerschmitt Bf 110
Baureihen C,D,E,F,G
Technisches Kompendium
ISBN-13: 978-3-939847-49-6
LAH-CD-ROM-1050"
and
"Messerschmitt Bf 110, Me 210, Me 410
Heinz Mankau/Peter Petrick
Aviatic Verlag
ISBN-10: 3-925505-62-8"
What is yours?
Also I know it would be horrible to even dare to fly an overloaded Bf 110 with 2x SD 1000. But it was possible to load them, so it should be possible to choose them.
Edit: I also added the Revi C12/D and the missing "Schwenkplatte SP 1A" to the bug-list. See 1. post.