I had Mick Pinner make up one of his Astro Shield (Dew Shields) for my C9.25.
It arrived last night and I fitted it tonight.
The build quality and paint job are just magnificent. The shield fit like a glove and took into account my losmandy rail on top. The 4 nylon lock screws are not really even needed the fit is that good. You wont find a better dew shield for ANY amount of money. The fact that these are half the price of something not nearly as good is a bonus.