Not sure about the chip but you should stay away from aluminum adapters. They are too soft and particularly with a heavy lens can deform and result in poor focus. There is a good reason you don't see aluminum lens flanges on most lenses.Try this one ... $17.71, free shipping
http://cgi.ebay.com/AF-adapter-M42-...5?pt=AU_Cameras_Photographic_Accessories#shId
Mike