You guys must have some shaddy dealerships around you. My dealership picked up my BS to do recalls. Not sure how dealerships can deny recall services. Thought they all had to cover them.
Where did you find your silver knob kit from? I bought a set earlier this year for 2025 BS and the gear shift knob cover didn't fit right almost as if it were too tall
Try using premium gas. Might make it a bit smoother, Haven't noticed what your noticing on mine but I've been running premium. All though I do notice the downshifting when slowing down. Just seems normal to me. idk