If you dont have a tip on it, then that is probably why it sounds like *****. The tip makes a huge difference on the pv2. If your running a stock tip, it will be very loud, do to no restriction on air flow. When you go with a smaller tip it quites down quite a bit.

If you spent all that time fabbing up stuff, then I'd finish it and see what it sounds like before starting all over again. But, thats just me.

Good luck!