I wouldn't worry about the hubkarma. I used to really care about it and actually had a hubkarma score of 100 for a while... but it really didn't effect my hubber score, which is more important for you.
The reason I had a hubkarma of 100 is because I was religious about using the suggested link tool in my hubs. I thought that was the right thing to do. I found out later, however, that using the suggested link tool is great for Hub Pages... but not really for my hubs. By putting links to other hubs and forums in my hubs, I was directing people away from my writing.
Now I only put links on my hubs to my own hubs or to other hubs that I'm willing to promote. My karma points have gone down a bit, but I'm not worried about it. My hubber score remains in the same bracket, so it doesn't seem to effect it.
Hope that's helpful! Great username by the way! :)