NEED ADVICE ON HOW TO REMOVE A NARCO 810 COMM, I CANNOT FIND THE HOLE

My 2nd comm radio once in a while cuts in and out.
I found the manual and directions online how to remove it but I cannot find the right hole anywhere on or below the radio.
I found these step by step directions, but I don't see a hole. I removed the equipment in the slot below the radio and cannot see a hole on the face or underneath the radio.
Any suggestions would be great. I just want to remove and put it back in to see if it helps.
Thanks

There are 2 different configurations of the Narco COM 810 with different
locking mechanisms. There was a "standard" 810 and a "replacement" 810
(designated the COM 810/R. The /R units would slide into the old COM120
trays as well as a couple of older Narco units. The different units
release in 2 completely different ways.

The 810/R replacement for the COM120 uses a single allen screw (as did
the original COM120) located on the bottom of the face a little to the
right of center. I believe the "standard" 810 used a single spring
loaded lock (on the right side only about half way up on the right
faceplate) similar to the MK12D (which used this lock on both sides).

To release the "standard" 810, you find a drill bit,welding rod, or long
allen wrench that just fits the hole and push it in a bit ( about 1/2
inch). You then push the faceplate back (in) to release tension on the
lock, insert the rod to release the catch (while holding tension on the
faceplate), and then let go of the whole thing. It should pop out a bit.
From there it should be free to slide out. If you don't push the
faceplate back to release the tension on the lock, it will appear you
are using the wrong tool because it won't unlatch. The actual lock is
about 3 inches into the hole. If you use a tool that is too skinny, it
also won't release the unit. Find a rod that just fits the hole.

To release the "replacement" 810/R, you find the allen wrench that fits
the allen screw in the bottom of the face (it is recessed back into the
hole about 1/4 inch). Unscrew the allen screw and the unit should begin
to back out as you turn the wrench, You then turn the screw (about 10
turns) until the unit is free to pull out. If you strip this screw, you
are screwed. Be sure you have the right allen wrench before you bung it
up. It fits snugly into the screw.
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