I really hate to admit this......grey tank overflow

Man, sorry to hear about your new toy. I had a Trail Harbor and it leaked while we were gone. It looked like a water park for squirrels. We got a wet vac and sucked out as much as we could. Left the a/c running constantly and it eventually dried out. Not saying that was the best method, but it didn't seem to do any serious damage either. Tough call on the insurance claim. I would lean toward not filing. Good luck.