Really,why would no one work on it, Mosins aren't that hard to figure out especially that problem? The Timney Mosin trigger is pretty point and click, pull the old one out, slide in the Timney and push a couple pins in and it should be good to go. At least according to the instructions.(note that it has been awhile)
edit just made sure I was accurate, actually you have to screw in a screw into the frame but still pretty easy. When I pull the trigger the hammer(non technical term, its the release on the bolt) does move and it works fine in releasing the bolt from the chamber when I pull it out. Occassionally it will dry fire, one in a hundred times roughly and there doesn't seem to be any rhyme or reason to when it happens.
Edit2: Discovered a problem in the stock(bullpup stock) actually, somehow I managed to break a spring in the trigger mechanism. Manufacturer is sending me a new one
Once I got the assembly broken down(its a lot of hex head screws on a very robust stock, CBRS Cossack stock
http://www.cbrps.com/Products.html) I separated the trigger from the stock and it cycled just fine. So now I wait.