Thanks for the kind words, but to say 'Mr. Precision' is a bit too much! I must correct myself, because I found more images while I was searching the Gallery (the images posted were also from the Gallery but saved in my PC) regarding the ROTJ helmet interior:
In these images it looks that the black tape that covered the MQ-1 board is missing.
The black stripe along the MQ-1 board looks very similar to the one found in the Pre-Pro #3 helmet, which is a piece of velcro fold over, and it seems that is (was) used to hold the battery tower in place (see the inside of the ESB helmet).
The first image shows that the liner is still attached to the helmet, while the second image shows that the liner has attached some kind of foam (sponge) strip around its outer circumference (the same setup is on the ESB helmet too) .