Hi Brian, heres what i have regarding your Heinkels!
5J+AT He111P Carrying the Gruppe Kdr Mjr Ernst Kusserow, 9/KG4 Staffel Kapitan Hptm Martin Schumann, and the pilot Uffz Schultz. The remainder of the crew were also captured.
See the link to the fabulous Flyvrak website below:
http://ktsorens.tihlde.org/flyvrak/dovre.html
For your 4/KG4 Oblt Ritcher ( actually Richter) this loss can also be found at the same website, and appears to be from 5/KG4 and lost 25.4.40!
http://ktsorens.tihlde.org/flyvrak/fagerliseter.html
5J+JT I have no crew names as yet, still looking!
Hope this helps you.
Best regs,
Steve.