I recently took the MS in because the sunroof was "stuttering" a bit towards the end of travel while opening. I asked the tech what they used to lubricate the tracks so I could DIY in the future. He showed me a container of Klubersynth RA 44-702. I tried searching on this hoping to find it for sale on-line, but I didn't come up with anywhere to buy it. Anyone know of a source or a good alternative?