Postcrete query

[Gossamer]

I've been putting up a short 4ft high fence.
I made the schoolboy error or faffing about with the post a little too long and it created a little gap between the mix and post.
Luckily I had space to chuck on top another 80-100mm of postcrete mix and plenty of water.....and left it alone.
Do you reckon i've got away with it or will it wobble and ill have to dig it out and start again?
Ta.

 

[HERTS P&D]

Hammer some timber wedges down the side of the post.

Andy