Did you notice that the link I posted was published by an animal clinic? When doing my quick research for you I found that a number of different vets posted "newsletters" addressing the topic of anal gland problems in dogs.
I encourage you to hunt down an expert on canine anal gland problems. Perhaps you could go a Google search of the topic with the name of the state in which you reside. Or you could call a vet school in your region and get a recommendation to a vet who has a lot of experience treating such problems.
Be persistent, myrosiedog. Your expert may be hard to find because -- let's face it -- if you were an "expert on canine anal gland problems" would you admit it? I wouldn't either!!!
So the expert may be hard to find, but I'm sure there's one near you and I know that with a second opinion or two you will get to the bottom of the problem.