take it back to the dealer again and tell them you're not happy they should sort it for you. did they do stage 1 tune? I did hear about a 117 LRS lunching it's engine due to insufficient piston clearance on a American HDforum resulting in a new engine under warranty. my LRS has been going great
This does not sound good bro, at least you have warranty.
I just fixed a 114 something Bob, with what sounds like a similar issue. This bike has been flashed with the current, new black super tuner. Owner went back to the dealer two or three times and they told him he wasn't revving it enough before selecting sixth. I took it for a ride and it was inconsistent and Flat,.. Tuned it with my Power Vision, happy days. The guy loves it and it runs much cooler.