Sorry to hear your new 790 is giving you problems. It always is such a disappointment when you spend hard earned cash on something that just isn't as good as it should be. May be after a few issues are corrected it will be the bike you were looking for. Sure hope so. We will definitely find out how the T7 will hold up on long runs at high speed now that Long Haul Paul has one under him. I am sure he doesn't let up on his machines on the interstate. I am with you though. it would worry me turning a motor at such a high RPM for long hours. I still would love to have a T7. It looks like a fun bike. My Super T is just about perfect for what i do with it.
If it were only a couple issues, I would feel the same way but with all the one's I've had I just don't trust it. Here's a rundown of the problems I've had since I bought it a month ago. Yes, I said in one month and 1,000 miles!
1. Recall on brake line prior to buying the bike.
2. Brake light replaced prior to buying bike.
3. Cruise Control quit working after the first day. (Dealer spent two weeks trying to fix it and after replacing multiple parts, KTM flew in a tech who eventually fixed it after spending a solid week, 8 hrs a day working on it.)
4. Oil leak around from sprocket shaft
5. Condensation in TFT screen after picking up from dealer (after they had it for two weeks trying to fix CC)
6. Ran out of gas on the way home from dealer because fuel gauge quit working and was reading half a tank when it was empty.
7. Whatever is next
As you can see KTM quality control is not even in the same universe as Yamaha. Other KTM owners tell me it's just minor but for me a bike (or any vehicle) should work as designed form day one, you know like a Yamaha does!