You replied to an older post so I thought I would reply,,,,
I also have a BAHA. I don't have many issues with it until I don't clean the post well. And if I let my hair get "dirty" it seems to cause excess oils to accumulate around it.
I was given a very soft toothbrush to clean the post. As long as I do that ( or often ask my husband to do it and look at it) ,, I don't have any problems. My ENT looked at it once and said there were " small crystals " I think, that the area would push out by itself,, I guess it's a bit of seepage or something,,, I can feel it sometimes with my finger,,, that's all I usually get though.
I have been told "it's normal" too,, I don't get bad infections or anything,, some tenderness occasionally but not bad.
I hope this will improve for you!!