Who all on here has a Sirius Sportster? The reason I am asking is I have been noticing that mine has been becoming very hot lately, to the point where the screen display is distorting until it cools down by holding it in front of the AC vent for a little while. Does anyone else have this issue? It has been hotter in Phoenix, but I keep it out of the sun while parked and when driving I have AC up full blast. I really like the unit, but this has me a little concerned.