You really need to consider just going to Dollar General and getting you a cheap, plastic four or five inch fan and putting it on top of your Pansat. It will move a lot of air around your unit.
My 9200 freezes up mostly when I'm watching DVB-2S signals that are too weak. When the signal gets better, the receiver acts better. So I don't really think its the receiver. I'm from the old non-remote tv era and don't mind getting up and rebooting the receiver.
I have a friend with a tv cabinet with glass doors, and his Viewsat lite would get hot, hot! Finally, it started freezing up. He had to cut the receiver off when he wasn't using it to give it a chance to cool down some.
I've seen folks solder aftermarket cooling fans inside their fta receivers with good results. Just make sure you don't get one that draws too much current. You can do a google to find out where to solder it in.
I've even seen people glue old bottle caps upside down to the chips for heat sinks. Its crazy what people come up with. Some probably work!!!