loman, I will say this with caveats and warnings, but the C330 is extremely simple mechanically.
The only real problem should be the lens, as the body is only a 'box' of sorts. The front and rear elements are easy to remove, at least on the 80mm lens by turning the front ring counter clockwise. I think that I remember that the rear is removed with a spanner wrench (I use a very pointed pair of old shears). I would do this, front and back, then flood the lens mechanism with lighter fluid and drain until all the gunk is removed. Keep moving the aperture blades and shutter mechanism so that the fluid reached all. There is no harm done here to remove ALL the gunk. You do not have to worry about allowing some of the grease to remain on any helical as there is NO helical on these lenses. The body's bellows takes care of the focus mechanism. - David Lyga