Thank you for the info that Phil is carrying the metal sprockets & idlers, Mike. I have been waiting for such things, but didn't know they were out yet. Can anyone post a picture of what the inside of the idler looks like? (The photo at RC Tank Wars and at Mato Mart just shows them assembled). I am curious if they can be adapted for bearings, or if they simply look exactly like the stock plastic ones do. Thank you. -Mike