Actually, I only posted one photo of the left side throttle body - the photo of the exterior. The interior photos, showing the left throttle plate from front and rear views, those weren't posted because they were pretty much the same before and after conditions as the right TB. On both left and right TBs, the throttle plate is much more carbonized on the front side of the throttle plate, the side that faces the cylinder. Not really surprising since that's where the gas gets ignited. The side facing the rear, towards the air box has much less buildup.