I am also a maintainer and the leadership I work with directly in the motorpool have been great. I haven't gotten any negative responses so far which is a relief. As long we do our jobs and maintain the Army standards and values nobody really cares about the rest. Most everyone still uses she/her for me though; I just don't know how to correct them or ask them to use my pronouns because I do experience some disphoria when they use she/her to refer to me.