I’d replace the post.
The foam might work for a hot minute but I’m not even convinced of that. I’d think the stress from the weight of the gate will cause it to fail rather quickly.
If the hollow is up in an area where the hinges attach you might split the post with the foam expanding as it cures.
They’re getting better on specialty tools the last year or 2.
The 12 volt line has expanded as well. I Didn’t need the 12v drill driver combo but wanted the 12v rachet they had as a free tool ona sale.
I rarely grab the 20v drill or driver unless the 12 just can’t get it done.
The tough system stuff is finally starting to catch up a bit. I will admit it pisses me off to no end that so many items that come in clam shell cases aren’t compatible or the tough system boxes could be designed with those items in mind as well.
Milwaukee is still winning that one but I couldn’t justify the price.