My initial thought/memory is when CL went from having a service rep who was responsible for selling, producing and servicing the customer to division of labor - their quality went down the tubes. The pitfall of a salesman who is driven by selling dollars, and then the producer who is driven by dollars (that the salesman set to sell the job and fill his ticket) is stradeled with doing a crappy job to fill his quota. So now the service guy who cleans up the whole mess is chasing around fighting fires.
The sales person should be rewarded on profit - if at all possible. Not just sales. Having someone trying to just make a sale and personally profitting from any sale, may just lower the price for the sake of lowering the price.
Check out this thread....