Reply to Numark Mixdeck & Traktor Pro HELP?!?!

I recently purchased the numark mixdeck and it came with the Traktor LE program, which worked great! I had no problems and wasn't eager to get the PRO edition till i noticed how few effects LE had. When i got PRO and started working with it, I noticed that the syncing was not as efficient as the LE edition. If i sync two songs without looping either tracks, it works just fine...but when I try to loop a song in order to mix them together it sounds horribly off beat! I tried adjusting the beat grid, and they all look good to me. The grid line is on the peak of the bass, Idk if its cause my mixdeck isn't dropping cues properly, is there an option where cues can be automatically adjusted to the beat grid so your not dropping them too late or too early?

Basically my question is...why is my sync not working as good as it did in the LE version, why all of the sudden in PRO am i having such hard times mixing loops? Thanks for the help!