Just a thought.
http://www.google.com/products/catalog?hl=en&rlz=1G1GGLQ_ENUS248&q=bug+screen&gs_upl=195l1806l0l3733l8l8l0l1l1l0l291l1507l0.3.4l7l0&um=1&ie=UTF-8&tbm=shop&cid=2122409506941339175&sa=X&ei=xN-FToqoOKLKiALAlZzXDA&ved=0CKIBEPMCMAM
I had factory put in new door. The cost was the same as shipping would have been. Door is fine but of course not perfect. Found out later that ATC could do it cheaper and get the same door. The bug screen mentioned would be overpriced if they sent it free. I have seen people try them and it is sheer luck if they work even once. If you want to get by super cheap, there is a screen that rolls down from a guide at top. They work good but are not as convenient as the factory door. The other idea I have seen on some units is velcro and conventional fiberglass screen. It works but is a pain to use. The nice thing about having the factory do it was they noticed a lot of other items on my Hawk and took care of them gratis. My old door was toast so no chance of selling it to anyone, probably would even have been able to give it away.