Thank you for wonderful mod pack, I love it. Got very interesting prop. engines behaviour, including NK-12: first, the temperature, which I fixed by correcting the .cfg file; second, thrust and altitude dependencies. Engines just tend to turn off after ~5km above. I know, that many prop. engines begin to starve for oxygen on altitudes approximately higher than 5-6km. However, there are many devices that reduce oxygen starvation of engine and, actually, NK-12 was create to work optimally on altitudes ~7km higher. So, I'm trying to fix and balance it for my own use. And, last one: the prop. blur have a very low res. and it is very dark - so, I fixed it too.