Afraid I can't help with the negative carrier.
I *did* find a manual for the enlarger (you might have this already):
http://www.jollinger.com/photo/cam-c...rVI_Manual.pdf
Do you have the medium format carrier? If so you could used that as a basis for the outside dimensions but re-design the inside to accept 35mm strips... a ready-made 3D CAD project for a student! :)
I did have a quick look on ebay and I couldn't see any 35mm negative carriers - there were slide and 110 carriers (both in Canada)- you could buy the 110 carrier and 'butcher' a 24x36 hole in it.... maybe?