My '01 360 F1 Spyder with 42,000 miles has in the past 1,000 miles or so developed a noticeable "clicking" sound from the back of the engine when decelerating into a corner. Under power at the same speed and turning arc, the clicking goes away. The clicking sound also happens in reverse, but again only when the car is turning. All this happens only when the car has warmed up. Before warming up, none of these sounds exist. Has anyone come across this noise before? Any insights are greatly appreciated.