[SteveR]

Here's what I have thus far:

6./JG 53:
Hptm. Alfred Hammer 1x B-26, 1315 hours, 10km SE of Offenburg
Lt. Karl-Heinz Trettau 1x B-26, time ?, Raum Offenburg
Fw. Willi Becker 1x B-26, time ?, Raum Offenburg
Fw. Erich Ernst 1x B-26, time ?, Raum Offenburg

13./JG 53:
Obfw. Eduard Isken 1x B-26, time ?, location ?

Sources: JFV 13/V, Prien JG 53 history

17th BG lost 3x B-26s, 1300 hours, 15 miles ESE of Breisach

Source: MACRs

I'll look up JG 53's losses if someone doesn't beat me to it.