@Chuck_P: At first it had taken me a while to see what you were meaning by arm gaps. The bleaching method proposed by logan2z and koraks is a sound approach and would be the one I would try before touching the negative. Bleach and then slowly build back up dye to bring the tone back in the print, of the arms.
Well done negative retouching has the benefit of having to retouch/spot less, or not at all if you did an exceptional job, on future prints from that frame. Negative retouching is not as easy, as AnselMortensen has pointed out. if you can easily see the application of the dye filling in the area that you are working on, even if the dye is dilute on the brush, that means you have went too far with it. It is easy to do. You have to be very patient and meticulous. Practice on a sample negative that is not important to you until you get the hang of it. Making a copy of the negative before retouching would also be a good idea. I have retouched negatives using dyes and lead pencils, a long time ago when I was at Hallmark.
I also had a set of SpotPens. Anyone remember those? When I was at Hallmark those pens turned a few heads of the students. The instructors preferred us using the regular method of spotting. I was told, in an indirect way, to put those pens away!