UBB.threads PHP Forum Software Community Forums UBB.threads 7 Importer Support New MySQL database for 7.02 twice the size of 6.5.1

I created an all new database in MySQL 5.0.27 for my new UBBT 7.02 install.

I installed UBBT 7.02 just fine and did the import of my old UBBT 6.5.1 and now looking at the folders for MySQL databases I see that my 6.5.1 folder size is much smaller.

6.5.1 = 160MB
7.02 = 352MB

Curious why the new database size is so much larger and if there is anyway for me to decrease it's size.