I have my magnetos out for the carbon brush replacement. After reading up on that I figured I would have to retime them so I looked into that. One of the guides I found stated "be careful when removing or reinstalling the magnetos because the rubber isolators may fall off into the accessory case". I had already removed the magnetos and can find no evidence of rubber isolators on them. I can't see inside the holes on the accessory case because I have just enough room to remove the magnetos. Slick publication L-1363 makes no mention of these isolators. The Lycoming overhaul manual shows a diagram (4.1) of some "rubber cushions" on a mag that looks nothing like my slick 4370 or 4381. So my question is: are these isolators on slick mags? If I don't see them on my removed mags are they likely inside the accessory case somewhere? I can't imagine that something that would fall off so easily would be in such a position