pursebab,
That tassel bag looks like so much fun!
While I do not have that style bag myself, I did see several pictures of them listed online where the tassels were slightly uneven just like yours. So, while it is not perfect; it is normal.
If it bothers you, you could probably clip the bottom link off of the long ones. Nail clippers might be strong enough; and if not, wire cutters definitely would be.
One final note, the tassel is close enough that I doubt many people will notice the slight unevenness when you are carrying it.