Forth from the top, if you include the main beam or forth from the bottom still brings you to the EPAS lamp & still doesn't add clarity to your previous comments or mine. The "machine gun" sound, a noise that will be familiar to many on here, myself included, indicates a locking mechanism fault & I refer you to comments made in a previous post. Replacing that will clear some air & hopefully get you on the road, however I note with interest your comments relating to your stripping out the lock mech', I do hope this aspect to your problem isn't self inflicted.
As always, best of all things. Mike