paper as in notebook paper or sandpaper? I'd think you'd need emery cloth/shot of brake kleen then maybe run thru the OE procedure in the shop manual for adjusting the voltage setting. mrrandyj at aol dot com sells an electronic one that has a cover that looks like the OE mechanical you now have for $29 to your door & iirc there is a parts house brand which will accept the OE mech cover off of your current one. When they act up they are problematic & as you know you dont want to chance it full fielding . I would not run it till you deal with it