I have both an Omega D-II (in perfect condition pretty much) which I use all the time, and a Durst Laborator 1000 (got for $25 local pickup at the last sec on auction cause no one else bid) which I have yet to use since I haven't picked it up yet. I adore the Omega to bits, but can't wait to get the Laborator up and running as well. I also have a Durst M606 which is quite a hot little vintage piece of work.
I'm afraid your Omega DII is about done. The Durst Laborator is head and shoulders above the Omega. I had both (DII and L1200). There is no comparison.