Huber ... I know about the density with sea levels and hot days ... so from what you are saying, I am like not high from the sea level, maybe just about 200' - 300' so I really do not need a bigger engine. However, it gets totally hot here, say about 98F so maybe that is why the guy who told me I needed a bigger engine due to the moisture was experiencing loss of lift due to heated air. I am sure what I said makes sense! Heheeheee ... thanks dude.