You should have some kind of oil cooler. The older twins had a block of solid metal between the cylinders to help carry heat around to the fins and the dry sump oil system helped cool the oil. The new twins have a hollow spot between the cylinders where the cam chain runs. To make up for the lack of heat sinking metal there, they cool some of the oil and pour it down the cam chain slot. The long term effect of taking away this flow of cooled oil is that the cylinders will heat unevenly and change shape. This will cause uneven wear on the cylinders, pistons and rings which will shorten engine life. This might not matter so much on competition bikes because they usually get rebuilt every season.
