CVDs and Flux power???

[thzero]

If they are reverse threads, you need to Savage 21 nuts.

One would think you can replace the shafts. All the CVDs I've had could be replaced.

As for the power. 9S is a lot on 8th scale equipment; it wasn't designed for it. Most of the "8th scale" stuff we have is designed for nitro, not brushless. That being said I've run my RC8Te on 5S and 6S without issue. But those are probably better quality than the older Savage stuff.