>>6445204If you invested in expensive nippers cut right at the gate.
If you don't have premium nippers, or if the nubs are on curved surfaces, shave/whittle away with a hobby knife down to the part. Learn how to use a knife to remove material gently...resources on wood carving/whittling knife techniques help, particularly the "push cut" and "pull cut"
If you manage to make clean cuts all the way to the part surface you need only some light sanding with your final grit(I.e. 600) too even out the surface.