Big Rig brought to my attention that my mufflers may be mounted backwards. I hadn't paid attention to this because i didn't think the direction mattered, but i just got off the phone with Bassani and it turns out they are directional! One way flow only. The guy told me it will affect sound and performance and eventually could ruin the muffler if they'e mounted backwards.
This could explain why I didn't get the sound I wanted (like Alax7 and NYC), and also the Bassani guy said it could also cause the drone i'm experiencing.
Talked to my exhaust guy and hes going to fix it...i have a feeling i'm going to be much happier in a few days.
Anyway, for guys looking to do this make sure you pay attention to this.
Thanks again BigRig.