Don't laugh, but if you send it back it's likely you'll get a "within spec" reply and be out the shipping. I have a similar problem with a revolver and could never get an answer on what their standard is. They said I could send it in and they'd check it. That's all they'll commit too. I decided it wasn't worth it for what little I have in the gun. I still have it, it's my "I don't care if I lose it" gun. It shoots well enough for self-defense. Which I think is their standard.
In my case this particular revolver has .360+ throats. Best I can get it to shoot at 15 yards is about 5-6 inches. That's roughly equivalent to your 9" at 25 yards. It's never going to shoot well without a new cylinder.