Hi again E man, unfortunately, the ID tags were never available as a spare part...they were affixed to the frame/chassis at manufacture at Thebarton factory in South Aust, and later in the Rover guise by Rover at their factory. I am sorry I can't help on this one....there just not there to be had.
Re: your cylinder/bedknife issue, unless the bedknife is ground to perfection, you will never achieve the finest adjustment possible, if it is not perfectly flat and true.
