Giving More Options for Tempo Range (+-3%)

The Tempo Adjuster on The DDJ-400 is not accurate enough to sync the BPM of one Track exactly to the BPM of another. This problem is widely known and has been mentioned on the forums but no solution has been given so I want to suggest one:
Give Rekordbox users the option to bring the Tempo Range down to +-3. This would allow DDJ400 users to use the tempo adjuster at least when the difference of BPM is not farther apart than 6BPM in total.
As it is right now, even when the Tempo Range is on +-6(which is the lowest), it is almost impossible to make the BPMs sync up, as it will always wind up being 128.02 and 128.00 or something similar. Please consider my suggestion as I believe this would fix the issue for many DDJ400 Users.