Baffled by this site's inability to rank

[Blaze-Communication]

Hi guys,

I've been working on a site for quite a while and it has a really good link profile, excellent content, no errors or penalties (as far as I can tell) but for some reason it consistently ranks below a lot of thin poor quality websites with spammy EMDs and a few obviously paid links from old-skool business directories etc.  It has a significantly higher DA and linking root domains that almost all of them.

Also it just bounces around from #40 to #28 to#35 to #40 to #28 on a weekly basis for many of our primary keywords. There just seems to be no logic to this and it goes against everything I know and everything we're taught.  (I should probably point out that I've been doing this quite a while and have a number of other sites ranking extremely well in quite a few different verticals),

Has anyone ever experienced anything like this and what did you do? Before I throw in the towel it would be good to hear from others and try and understand why this happens and if there is anything else I can try to help my client and fix it.

Many thanks in advance.

[LauraSultan]

There are so many factors that could be causing one site to outrank another for a particular query. Without the URL in question, any advice from the this forum will be purely theoretical. Any chance you can provide that?

[MattRoney]

Hi Blaze-Communication! Any way you can provide any more information, or a link to your site?