Tape around the dot to protect the emulsion you want to keep. Use a plastic tape, like box tape, Not paper tape, like regular masking tape. If you have room, you can dab a little remover on the dot with a tiny paint brush and let it sit for a minute. Then say a little prayer to the print gods. Then give it a little zap with your spot remover gun. It's just a mini pressure washer. use the shortest burst with the gun you can, in case you miss. If you mess up, you were gonna have to reburn it anyway. Peal the tape off as soon as you think you got it, and dab off any remover with a dry rag to avoid any new clogs in the area you just fixed.