The key here is, as you've noted, not any stalemate line, but rather your ability to THROW the solo to either power. G/I both need 3 more to win; Italy can immediately force Smy, Germany Warsaw. That leaves two, and hey, you have two more dots. So you need to play them off against each other. It looks to me from my quick first analysis that it is easier for you to throw to Germany than Italy - getting Germany into Galicia is definitely doable, and that's the key for a German win. So you need to get Italy to bypass the certain Smyrna and go to Armenia, where he can support you into Sev. For the German part, you have to convince him to not attack you in Warsaw, or you will give the game to Italy by supporting HIM into Sev.
Addressing the idea that one or the other might back off to allow you to be eliminated is also key - you have to be willing to throw it to the person who doesn't back off in order to convince both of them that they will lose if they do so. And the conditions to each player also have to be hard - any shenanigans and you'll throw. If they BOTH back off, then you ... I don't know, retake Bulgaria and build?

There is no stable 17/17 for them that I see. If Germany takes a dot from you, you remove fleet Black Sea and Turkey gets the win, and if Turkey is the stabber, you are dedicating your game to getting Germany into Rum/Sev.
Finally, the fact that you can see who votes for the draws is fascinating, and lets you insist on a draw vote immediately - whomever doesn't vote for the draw, the other player gets the solo!
A MOST Excellent example of how your position can matter more than the number of units on the board.