My Ebay GPS reciever reads fine sitting on the dash, but I'd like to mount it in the vent on top of the dash to hide it. It's almost the perfect spot, the only problem is the screen that covers it is metal and my reciever won't read through it. I'd rather get a new receiver than find another spot for it if possible. I cut some plastic out of it, but the mtal still hold it back. I've read on another forum that the receiver that comes with Pioneer AVIC-D3s reads right through it, so I'm thinking a better quality USB receiver will do the trick. Any suggestions?
Pic of the modified vent: