Originally Posted by Gryphon
I own a second gen Version 4 (post-recall) with which I've experienced one "lock open" incident. I've had it since some time last year so this predates the current version by a considerable time span. The only other issue has been the staking around the probe was insufficient to keep it captive and it tends to push its way out occasionally, which is a minor issue. I'm fully satisfied with the product and its performance.
I changed the staking tool and adjusted the depth of the shoulder at the top of the probe for the new build of V4
to address the light staking issue. The new build of V4 is kind of megastaked into place. I takes a vise and a hammer to remove the probes now.