Kylux
That's what I have been able to discover too. There also don't appear to be that many of them which puts us at a disadvantage.
The Bothan? He has no interest in winning this war. What have you been able to find out about these Yuuzhan Vong? Other than the fact that they appear to be extremely hard to beat. Well we don't have Starkiller but perhaps this Imperial Remnant knows if there something similar that might still function.
But it takes much less time when you use the Force.