By "corrections" do you mean the page following the original article showing the capacitive voltage divider for picking up the sample off the last i.f. stage?
Don,
In the July 82 issue there is a short note correcting the Figure 4 schematic in the original article. Pin 3 of IC8 should be connected to Pin 11 of IC2 and not Pin 10 as indicated on the original schematic.
In my notes from the internet I also have a line that states the Envelope Detector position of switch S1B should be at ground instead of having no connection as shown in the schematic.