Gerber used to make a similar case to the one pcitured here:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2311632452&category=29517

Look around maybe you find one. I still have one from 5 years ago and it's doing great (I have the same setup that you do).

Matt
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Matt
http://brunerdog.tripod.com/survival/index.html