Speaking of Armoral -
I'll share one with the Speedmaster boys & girls. I use Maguire's equiv. of Armoral on all the black stuff when I do some serious cleaning. Put it on with a soft cloth, let it sit whilst (I love that Brit talk) you have a beer and wipe it down with another soft cloth to get the shine an oiliness off. If you want to get that heavy into it, I also use the same on a cotton swab to get between (me thinks that's twinst) the fins. I've never said anything for fear that I would see some harmful effect, but after a year and a half, the black looks like new. Another benefit is if you accidently get some wax on the black (it can be hard to get wax off of unsmooth or flat paint and vinyl) use the same stuff. It takes the chaulky wax right off - That works for car/truck vinyl trim also. So, now that the cat's out of the bag - Yes, I do clean from time to time - But riding is much more fun...