Redsquirrel! I should have updated this post. When you split the 2 halves of the motor casing, you can see it nested between the 2 halves. There's a little groove on both sides it fits into. I think it's the top of the motor. And if memory serves, it sits like a tent, not a "V"
Wow. That's clear as mud. If you need, I can try to disassemble a motor to show you.
I'm not sure if it made it quieter or not though.