Roland SH-2 question

[Roland] [SH2] – [white bracket under Keybed]

Hello I am attempting to repair a Roland SH2 and after removing the keys each key has a white bracket the key goes through I seem to be missing this part on one key and didn’t see it listed in parts, I am wondering is it a crucial part for the synth to have? And if so any suggestions where to obtain one

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This is the part I think I found on a schematic

I don’t see it at all in the service manual

However, the part number appears in multiple keyboards

do you recognize anything similar under the bushings link?

Thank you I didn’t even think to see if it was on another Roland product. Found it, thank you!!!