Have a 2019 ultimate with 18,000 miles. The dealer service person told me the 15K service includes throttle body cleaning for a cost of $190.00 And takes 1 to 1 1/2 Hours. According to service person it requires the throttle to be taken apart and manually cleaned with a solvent. I did not get it done. Looking for input from the group about this service. How important? Does the cost sound reasonable? Any alternative methods? Etc.