Hello John,  Some years ago I discovered that the Scotch Magic Tape
that comes in a _blue_ (not green) box and is on a blue spool has an
adhesive similar to that used on their "Post-It Notes."  That is, it
peels off easily and leaves no residue.  I find it very useful for
covering tracker holes.

Jim Heyworth,
Sechelt, B.C., Canada

 [ Another useful 3M Scotch product is "Low Tack Artist Tape", which
 [ is a paper strip with the gentle "Post-It" adhesive.  -- Robbie
 [
 [ I have become very fond of 3M "Scotch-Blue(tm) Painter's Masking Tape
 [ for Delicate Surfaces".   It is available in a number of widths.  "It
 [ removes cleanly without adhesive transfer or surface damage for up to
 [ 60 days".  It has a smooth surface.   I would expect that it would work
 [ well for the application we've been discussing.  -- Jody