I have an Infocus 7205 that has about 465 hours on the bulb. It seems like it's at best only half the brightness it was new (the room now needs to be totally dark to see an "Ok" picture) while using a stewart filmscreen Firehawk screen only 15 feet away. What should I do? Does the warranty cover this type of behavior? Should return it to the dealer I purchased it from or send it back to Infocus? or?