Lay Masking tape on both sides of the seam then useing a long sanding bar with course paper sand the glue joint down to at least flush or more ,then its very easy to blend it in. Use only good sharp paper and don't apply very much pressure ,but sand diagonally almost cross grain but not quite . This will usually get rid of your glue joint and if you go to far, shoe shine it with some 180 -220 while pulling the strip towards you . I hope this make sense , its easier to show than explain.
I get rid of CA joints like this also works great for me.