I recently picked up the 512 BB from the Specialist Garage which has been servicing it for the last several years (highly recommended). This was a major service as the cambelts needed changing, which is an engine out job on the Boxers. Took care of a number of other small things while we aere at it as well. It is running absolutely fantastically again. Carbs sound wonderful, acceleration is terrific, and it starts right up with a minimum of drama. Only downer is that it will not get much use until the weather improves. What a great car.