Quick dumb question. How detrimental is it to the engine to run a saw that was pre-set for Summer operation during Winter months? The manual says to run in Winter mode in temperatures under 50 degrees Fahrenheit. The other day it was about 40 and I ran in Summer mode for about 15 minutes total. I forgot about resetting this. Exactly how detrimental is this? Will the saw actually run better if given the appropriate setting? Start easier? The manual stated something about carburetor icing but I wouldn't think this would be a problem in temperatures over 32 degrees Fahrenheit. Please school this n00b!