This reminds me of the Harvard Implicit Association test, particularly the gender career one. It will tell you if you implicitly associate certain careers with certain genders.
Since the overwhelming majority of, say, auto mechanics, are held by men, associating these roles with men is entirely accurate. Without saying anything of what it "should" be.
If your results were anything else, it suggests some kind of powerful overcompensating counter bias is as play. That your desire to see more gender balance in this role is so great, that you subconsciously already believe it to be normal. The real world is a deviation from where it "should" be. This strikes me as a rather pernicious position. Dogmatic. Almost religious.