Back when H-D first introduced the Evo motor and the belt drive, a friend of mine was working for Rider mag and he was testing a Tour Glide (Road Glide with a trunk). He picked up a nail in the rear tire and had it replaced at the local H-D shop. A few days later at a rally, we noticed a large puddle of oil below the front cog. Apparently the tech had tightened the belt too tight and it broke the seal on the front cog.