I was having y-axis collisions, so I remixed M3D's mod of Rons' tensioner and the one-piece holder.
My remixes are here - the tensioner and the holder (this model).
After installing my modified housing I did not actually need this modified holder at all, so I am publishing this model only because it might be useful for someone else if they have bigger problems than I did.
Be aware that this may not be as sturdy as goldbird3's original - only use if required.
The author remixed this model.
Reduced the length of the holder in the forward-most direction.