Hello, Eric123456!
You could try creating your own title graphics outside Power Director(in Microsoft Paint, with assistance from Microsoft Publisher, perhaps), then import the graphic and lay it on a spare PiP track. I often create titles for videos this way. I open Publisher(blank page), click on WordArt, choose a design template, type in my text, fiddle about with size until I get what I want, then copy and paste to Paint, tidy it up a little there and save it as a bitmap(with white background). I then import that graphic to PD14, using Modify to make the white background transparent with Chroma-Key. It may be a fiddly excercise but it has worked well for me in the past. How you animate it is up to you but there are two methods to bring your graphic in and out of your clip. You could use the
motion effects in modify or, using a colour board ahead of, and after your graphic(made transparent through Chroma-Key), you could make the title appear and disappear using the transitions. Some work better than others here, it's a matter of experimentation. This method could suffice until you get your erratic size problem sorted with the inbuilt title templates.
Cheers!
Neil.