I am a postdoc applying for tenure-track assistant professorship positions. I am writing one application per day and have less time that positions to apply for: some job offers expire before I am able to submit. Recently, the templates of my application files (cv, research statement, teaching statement, cover letter) have been proof-read by a native English speaker, and some blatantly embarrassing errors have been found and corrected.
It would take me 1-2 full days to correct about 7 applications which have already been uploaded to the human-resources sites of various institutions but which are still editable. What's better: invest time into one or two new applications or correct errors in the old ones?