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One long standing design flaw with the v-twin (imho) is that the rear cylinder always runs hotter, behind the other one out of the airflow. Our vertical twins have both cylinders in the wind, where they need to be 
G
YES! It's why the HD 96 ci are having some issues to the point where the MOCO currrently has offered a map to cut spark to the rear cylinder at idleing speeds to help reduce the heat at the rear cylinder which is out of the airflow. Watercooling will probably be in their future (V-ROD already there) The faithful are going to hate the solution.
Definition of Insanity: "Doing things the same way over and over and expecting different results."
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