2021 Ranger. After a few trips up the mountains I can confirm some kind of stumble/vibration/engine miss/trans slip when going uphill giving just enough throttle to maintain speed. Usually around 2k rpm. I am getting an inconsistent vibration as though the engine isn't getting enough fuel or ignition or torque converter trying to decide whether to lock or unlock. Makes it feel like I'm going over a rough road even though it's perfectly smooth. Downshift and it goes away, regardless of which gear. Runs fine at all other times. Anyone else?