My 2018 Textron VLX 700 (no EPS) EFI stalls on declines. I've used Seafoam, Heat, Isopropyl Alcohol, Star Tron, and I replaced old gas with new, as well as replaced the battery. I've also brought my machine to the dealer to troubleshoot and they could not duplicate the problem or find any issues. They changed spark plug, oil, and reset throttle cable to factory specs (I was messing with it so it did not stall). Has anyone encountered this issue? Any ideas how to fix? Could it be the tilt sensor? If so, how would I know/fix?