Jerry - have fun with your new FT-450D. Several friends have those and are pretty happy with the rig.
The Hustler 4 BTV is a good solid antenna. Is it ground mounted? Or do you have it elevated up on a pole?
One suggestion is that you can get it tuned and "working" with no radials. But it would be well worth the time to fun a few radials.
For a ground mounted system running some short radials in even a few directions will help the performance. I helped a friend install a 6 BTV and we started with 6 radials going in only two directions. The radials were random lengths of 20 to 25 foot and were mostly invisible when we used wire turf staples to pin the radials to the ground.