If you are refering to the tar like substance that covers the shutter curtain and causes it to stick then I had a similar problem with my EOS 650.
I used lens cleaning fluid as a solvent to dissolve the sticky substance, but apparenly lighter fluid is supposed to be better (it is a stronger (more non-polar) solvent). I used cotton buds to do the cleaning.
I did have a heart wrenching moment when the shutter didn't work at all when the thing was covered in the fluid, but when it finally evaporated everything was OK. It seemed fine after I did this - looking through the back of the open camera with no lens on and firing shots at all shutter speeds.
I haven't managed to run a full film through yet - I have 22 more exposures to go and have been distracted by a Russian Leica copy rangefinder in the meantime!
Obviously there is great risk if you do this yourself as the shutter curtains are very delicate, but if you don't mind potentially ruining your (£3.99) camera then go for it!
Dave.
Edit: Just realised this is my first post. Been lurking far too long!