hello fellow nsr riders

I seem to be having a problem with the old mc21 it does a crazy thing with the oil light ,when its in neutral it revs fine, but when you wack it in gear it thinks it has no oil and sort of stutters and doesn't want to rev
it feels electrical but I'm not sure .
I don't really want to rev it out just in case it doesn't have oil and decides to feed on its internals

has anyone come across this before ? or can anyone make an educated guess
thanks
mark

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