This was very well said. I thoroughly enjoyed reading this post. Very thought provoking. Thanks for taking the time for creating this response.The root of the problem is not the behavior. The root is a distorted view of reality because you missed out on a specific aspect of it. This aspect is specific for each type. Every behavior of that type, good or bad stems from this delusion.
The real motivation is that everybody wants to be loved, to be counted, to be significant; basically to be human. But because of this distorted view of reality, they go about it the wrong way.
So this motivation is like the engine of the car and the distortion is like a dirty windshield. You keep driving forward but you keep running into hazards or avoid things that are not really there because you can't see clearly. When people ask you about your experience, you'd report that the landscape is full of holes or something's wrong with the tires. You'd try to fix the alignment or the transmission but what you really need to do is clean the windshield first.
So you drive around with this mucked up vision for so long, you develop certain adaption because of it. Let's say you have this giant spot on the right side of you windshield, every time the light changes, you see a big obstacle on your right and you make a drastic left turn to avoid it. When you first did it, you weren't very good, the car spun out of control or even crashed. After a while, you get better at it and can do it with relatively less turmoil. So your "strength" is making crazy left turns without flipping over and you're proud of it but the question is do you really need to do it in the first place? Just because you don't flip over, doesn't mean it doesn't cost you. It disrupts your direction, you forget where you were going, takes forever to get there and you constantly have to get new tires.
Still, the ability to make crazy left turns is not all "bad", it could be considered strength because there are times you have to do it, but only if the windshield is clear enough to see that there's a real obstacle and also clear enough that you steer in the right direction and not end up in a real ditch.
To recap, the spot on your windshield is the loss of a specific view of reality, the sensitivity to "holes" on the right side is your specific delusion, the tendency to make crazy left turns is you specific reaction/compulsion and the ability to make crazy left turns is your "strength."
If you were to approach this like a typical self-improvement book with "your strengths are... your weaknesses are..., you need to improve on...", it would go like this: your strength is the ability to make crazy left turns. It might even glorify it like: you're fantastically manuverable driver. And your weakness is your right front tire always blows out. From that description, there's no way for you to fix the problem correctly. What it should say is you have a giant spot on the right side of your windshield, "focus on the negative" and remove the disgusting bug carcasses and dirt so you can see clearly.
So there's really no good/bad dichotomy with behavior in the context of the enneagram. It's either you do something out of compulsions (caused by your distortion) or you do it because you really want to do it. That's real freedom.