Assuming you reprocessed them for the full, correct amount of time and that you used an approved recipe they should be fine.

Mirros can have leak problems, especially newer models so that problem needs to be solved before using. Do some practice runs with just water until you get comfortable with it.

But you have to ignore any of those early attempts at sealing as it is a false seal, weak and quick to release. They are merely a response to the heat and contain no vacuum as needed.

Dave

Are you new to using this Mirro then? The newer models, those with that goofy lock in the handle one side, typically release a lot of steam around the handle until the preheating and venting is complete and the weight is placed - within a few brief minutes, the lock engages and escaping steam stops

My vintage 22 qt Mirro doesn't have that feature, my newer smaller model (maybe 10-12 yrs old) does. The steam escaping from the handle area on that one quits immediately when that little lever lock drops into place. Not a valuable feature IMO, I wouldn't be happy using the newer Mirros as my main canner.