Question for those of you that have the glow polish. What type of maintenance is needed to keep the shine? I had an aluminum RS3 on a previous bike. It didn't take long to cloud. On my TL, I just went with straight titanium cans. If they require a whole lot of polishing, I may have to pass. Are stainless steel cans (i.e. Yosh, Muzzys) easy to keep gleaming?