Not a showstopper if you are honest about it and it was a youthful indiscretion 20+ years ago that has not been repeated. Ditto for the initial instrument check-ride 20+ years ago.

They are not looking for perfect people but they are on the lookout for those with multiple events that could be evidence of a undesirable trend.

I guarantee the interview Captain sitting across the table has something in his past that was a "learning opportunity."