I remove the drum from the e-unit by spreading the sides just a little. I then use a bright-boy to polish the drum.While the drum is out, I also clean the drum axle ends and the drum axle holes in the side of the unit to remove any rust/corrosion.Check the brass pawl for any nicks or burrs. I also bend the small brass arm that protrudes out from the side of the drum. Don't forget, that little brass arm has been in a position where there's tension on it while it runs. In many cases that little arm can be bent. Some people will agree on this next step, some will disagree, but run your e-unit as dry as you can. I put a VERY small dot of oil on the drum axle and on the brass pawl, and then I wipe it off. Oil will collect dust and dirt, and when it does, it's going to stick. Then people will oil it again, and cause more problems. Be careful with the CRC, it will sometimes attack plastic. I sprayed some on a knuckle coupler and it melted it. I have a small spray bottle I keep on my work bench filled with rubbing alcohol,and I use that quite alot. I use the CRC when the drum is out of the e-unit as a precaution. And of course Al is right; bend the fingers down to be sure of a good contact.