Hi Garlydog,

You could always try,

DOW CORNING® 3145 RTV MIL-A-46146 ADHESIVE/SEALANT - CLEAR

http://www.dowcorning.com/applications/search/products/details.aspx?prod=01190300&type=PROD

I had aquired a few tubes of this stuff and works very well for the problem you've got. It will glue/stick together just about anything, is highly stable and doesn't crack and air hardens over 12-24 hours. It was being used in exoctic microwave communication devices. Didn't cost me anything though and don't really know where you can get the stuff and how much it costs in the US.