Working with Olympus XA oil on aperture blades and shutter blades

There was some oil on the aperture blades and shutter blades in my Olympus XA. And I show how to disassemble the front part and take out the aperture blades, but also disassemble into the shutter blades, and clean them in Isopropylalcohol99%, and now it work's really perfect. REMEMBER!!! how the aperture blades is put in before taken out.