undermount vanity sink mounting advice

Now that we have our Antarex machine, we are doing more undermount vanities. What is the best way to attach these? Chemical Concept is what we were using, but we had two sinks fall last week. We use sink setters rails for all of our undermount kitchen sinks, and (http://maplered.com) those work great.

I have noticed that the chemical concept clips work better when I don't use their crappy epoxy... used knife grade last time and (http://maplered.com) still holding(I hope!).
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Chris Jarczak
BraxStone (http://g603.net) Granite
Austin, TX
(512) 569-2102
chrisj@braxStone (http://g603.net) Granite (http://tanbrown.org) .com