Little confused about the transmission shifting on my parents 87 300 SDL. I remember driving the car and being able to get the transmission to shift down without having to use the kickdown switch. Mind you that I have not driven the car in years but recently they had the transmission replaced and when I drive it now it seems that the only way to get it to shift down is using the kickdown switch. Am I missing something? Is there an adjustment that needs to be made? Also noticed that between 25-40 mph if the car is going up a hill that it is very sluggish. If someone can provide some insight I greatly appreciate it.