On mine the back end of that screw to hold the reeds in place wouldn't let the cover plate tighten down all the way. I had to pull the reeds to get the blockoff plate tightened down.
Now go button it up and go try it out.... No more Pop! Pop! Pop! Heh heh...
I assume on a 6th gen or possible 8th, the job wouldnt be that much different....
Cheers all...
For real, I sell the cover plates at $29.95 plus $7.00 shipping (US) --I make these... Perfect laser cut, deburred and hand finished by yours truly..
..Stainless Steel socket bolts included.