Here is a simple mod for stopping steering issue with the DRB and DIB
Quite regularly, this screw will vibrate loose on the DRb or DIB. I am not a fan of thread lock on a screw that goes through a bearing as inevitably a little might find its way into the bearing itself.
So these parts are in question.
If the parts are already installed, then you need access to this location. maybe requiring loosening of the Bell Crank Stay from the Pulley Cradle.
I replace the 3x10 countersunk screw, with a 3x6 and add a 3mm "grub" screw to lock the top screw in position.
Tighten the 3x6 screw from the top as normal. Once the top screw is tight. Add the grub screw to the bell crank post and lock it tight. You can use thread lock on this as there is no contact with bearings.
I have never had to re-tighten my steering again.
This modification was not initially performed by me. So I can't take credit, but it works.