HTC Hero :: Phone Back Creaking When It Pressed / Fix It?

I wanted to share that with you, because I'm sure I'm not the only one who has this problem. The trouble was that the back of my HTC Hero (white version) was creaking when it was pressed. That applies mostly to the area around the volume rocker. Obviously, the back cover is made from flexible plastic and it is not making very good contact with the phone itself - i.e. there is a slight distance between the back cover and the device. So what I did is to put some tape (regular transparent tape) on the back near the volume rocker opening at the hollow (which is supposed to be a space for the battery but it's leaving way too much empty space) and everything worked like a charm. I played with my phone for a week purposely seeking for the creaking sound but the method surprisingly gave very good results .

If you know a better way to fix the problem.