Micronta 22-210 Ohm & Continuity Circuit(s) problem

[22-210]

Hello,
I'm new here and repair is pending receipt of an EEVb BM235 to replace my 22-210. I've got some pictures of the 22-210 PCB backside and rotary switch and another "piece" that seems to go nowhere. Wondering if someone might confirm this other "piece" does or does not contribute to the fix? I've not removed the PCB for component testing just yet. Also wonder if there should be TWO sets of three-finger contacts on this rotary switch rather than just the one set shown? It has holes drilled for mounting a second contact set, it would seem. At one time I did have a 1.5v battery decay/leak/corrosion issue which would be why that "piece" is corroded green, but that issue has been many years ago. And the finger contact screws have some green around them but all else looks clean.
Thanks!

[wasedadoc]

Schematic is in the manual available at https://bama.edebris.com/manuals/micronta/22-210/

One of the pictures at https://www.radiomuseum.org/r/radioshack_micronta_analog_multimeter_22_210.html# shows ends of only two screws in the plastic of the moving contacts holder, strongly suggesting no second set of wipers.

The long metal strip with central V appears to be part of S2 or S4.  Whichever one it is not is the switch in your first photo. S4 supplies power to the transistor circuit producing the beep in continuity mode.

[Runco990]

There is ONE set of 3 finger contacts.  The strip with the V is probably the "indent" mechanism for the rotary switch and likely belongs on the other side of the board, someplace on the meter case.

[22-210]

Well, yes indeed, that url has a photo like my first pic. I missed that last night when I looked at that accompanying wiring schematic and so did not realize those photos existed there - thanks so much! Indeed, it does look like that "piece" must fit somewhere on the other side of the pcb, as suggested. Weird, but I'd think the Ohm range(s) and Continuity would use a second set of finger contacts, especially since the omitted/absent contact set would be on the Ohmic side of the board (per the required front-side ClockWise dial rotation of the switch). I got a "parts only" 22-210 with busted meter scale glass on the way so will tear it apart and see what it reveals.
Thanks