Hi Pat - My apologies to you also for the lengthy delay responding. The Bork probably isn't as robust as stock riving knife because there are several obstacles to overcome from the existing design of the saw, but when mated to a suitable ZCI it's sturdy enough. I thought the same thing at first, but it's more than fine IMO! I'm sure you could even drill a screw into the Bork arm to shore it up if you're concerned about it.
