If you can find a copy, Georg Schlaug: «Geschichte Einer Transportflieger-Gruppe Im II. Weltkrieg» (Kameradschaft Ehemaliger Transportflieger, 1989) has quite a lot on II./TG 1's use of the type.
Also, for one that was shot down, go to:
http://www.ghostbombers.com/dragoon/odnav.html and click on the link for 17 August 1944.