We dismantled the SPOC refractor at the end of last season. Over the winter Bruce and I polished the various brass parts, we had the rings replated and I gave the tube a thorough scrubbing and cleaning and then a coat of Turtle Wax. Today Bruce and I reassembled the OTA and put it on the mount only to find that the Turtle Wax made the tube so slippery that the rings will not hold it in place. So now I'm looking for some thin sheet cork to put between the rings and the tube. Anyone here happen to have any thin sheets of cork laying about they'd like to contribute to the cause? Barring that, any ideas where in the area we might buy some? I'd like to get the scope ready in the next day or so so we can start training classes. Thanks, patrick