So I finally got the guts to dissect the Petri Automate rangefinder I bought at a garage sale for $1. The shutter would sometimes work at the highest speed, but jam up at lower speeds. Someone on another forum told me this is most likely due to it having 50 years of crud built up in the mechanics. So, now I have the shutter system completely removed from the rest of the camera. I have written down the order I removed bits and pieces, then taped the small items next to the note so I don't lose anything. I'll be able to get it back together easily. Only problem is cleaning it, which leads me to my question... How the *@#!% do I clean this: Is it as simple as soaking it in a light solvent like rubbing alcohol and oiling the gears? What about the shutter? There seems to be a lot of oil on the shutter leaves already. That coupled with the scratches all over the lockrings and screws plus the non-matching leatherette leads me to believe someone had it apart before and over-oiled it. Any help would be greatly appreciated.