Hi all,

Currently restoring a NC24, and came across this inside my parts tray i don't remember taking it off and now s**ting myself!



It looks like a oil restricting plug but is too big too be used on the connecting pipe between banks of clyinders (if you know where I mean!!) plus I know i put them all back in!

If anyone can share any light id be very grateful!

Anyone with even a guess??

Ive ran out of ideas!