Inconsistent title for posts

There is actually nothing you can do about this. Google changed their algorithm a few months ago where they will sometimes determine the title in their results if they feel it’s a better fit.

I noticed this when working on the SEO for the last company I worked for. When searching “channel letters detroit” the results gave “Channel Letters – Detroit Sign Company SIGNARAMA Troy” for http://michigansignshops.com/products/outdoor-signs/channel-letters/, while the page title is “Detroit Channel Letters, Fast Fabrication & Cost Effective | SIGNARAMA”.

Joost de Valk from Yoast (Author of WordPress SEO, which is very similar to All in one SEO) actually explains a little more of this in Why Google won’t display the right page title.