[quote=stuarbc;138132]filling with the screws is not a bad idea....but I think the silicone is the easiest route....appreciate all the help guys.....I've made a bunch of progress over the winter and will have to post some pictures soon.[/quote
Find a tap that will grab and put some threads in there. Aluminum galls easily on taps but lube it with WD40, kerosene or something like that and it will go in easily. Just don't use a tapping lube with trichlorethane, it will ruin the aluminum....or worse. Now use a short stainless round head machine screw and you'll have a slick rounded surface.
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