How much money do we let slip through our fingers by not insisting on a "front end" sales process for the service drive? We know customers that service in our stores will more likely than not shop for a new/used car at the servicing dealer. Are the service drive and the sales department battling each other or working with each other? Both play a vital role in customer retention and dealership profitability, but somehow the service drive customer doesn't get the same attention by the front…