Smooth motion tweening flash MX 2004

Good day to all flashers i have done a rotating motion tweened animation but i am looking for a way to achive smoother loop cause everytime the animated image loops you can just see that it loops and i am sure there is a way i can get by this small glitch to achive perfect loops or can i do it with AS if so let me know what the AS code will be i am a bit new to AS all in all

thanks people anyone everyone