I would normally say don't lube the blades but some people do use graphite powder. The blades are fairly clunky compared to a normal leaf shutter though. I'd say do without unless it has problems. If the RC has haze then don't waste a film, it'll come out soft-looking. Won't it clean off?
Put the Contessamatic back together, meter still busted but collimated and going to ebay it. My curiosity has been satisfied though, not going to look for another one. Tried to swap some lens elements in a couple of Contessas, ended up chipping one that wouldn't come out, and gave up. I seem to have a fair few cameras that need small fixes so am having a bit of a beano. Maybe Konica S next, it just needs the parallax lines adjusting as at close range the framing is off. You have to take off about 100 bits to remove the top though:
Top cover parts by
John Rodriguez, on Flickr