I also experience the clunk, but it only happens when I make it happen. I've learned to work around it.
As far as the Tri-Ax goes, you can mount the handle with a higher or lower height, nothing "more toward the rear". I have mine set on the lower setting.
As far as the Tri-Ax goes, you can mount the handle with a higher or lower height, nothing "more toward the rear". I have mine set on the lower setting.