I've noticed an anomaly with my classic cruise control and I'm wondering if anyone else has experienced it. If I'm making a gradual transition to a lower speed zone, I'll reduce speed in a number of steps. For example, if I have it set to 75mph and I'm working my way down gradually, I'll press the stalk down a little for minus 1mph and past the "click" for minus 5mph. I've noticed that after a few (4? 5?) such requests, and allowing it to finish adjusting before pressing down again, it will ignore any further requests to reduce speed. It's as if there's a limit to how far it will let you adjust. Even if I give it a little more time, pressing down on the stalk does not reduce speed any further. At that point, I just touch the brake to cancel it. I had the car in for service yesterday and mentioned that, but I'm not sure they fully understood what I was describing because they just said they drove the car and the cruise control is working normally. Is this normal behavior?