someone on the koni omega mailing list may be able to help, see
http://medfmt.8k.com/mf/lists.html for info, check archives etc.

www.edromney.com/products.html has a rapid omega repair manual ($25)

however, check your local library; they can get the military repair manual
version from any US Govt Documents depository library in your state on
interlibrary loan; these were popular with US Govt in vietnam etc.

other possible manual and repair sources are at
http://medfmt.8k.com/mf/manuals.html  

see http://medfmt.8k.com/mf/repairbooks.html for info on books like
romney's and tomosy's repair manual guides before starting out on a
"keeper" camera...

hth bobm