Invisible 1,

You may want to use this in your favor. If he truly understands heli's and is not just blowing smoke to get a sale, you might want to take him up on his offer by having him trim it out. That is, bargain with him! Tell him that you would like to support him and his business, but in turn you would like his help/advise in exchange. Obviously, he will be aware that you will need spare parts and misc items along your journey. Develop a rapport with him if you feel this would benefit you. Sometimes good "hands on advice" can help you the most.

-Just my opinion.