I'd suggest you think about it for a few days before attempting anything.
Is there a REAL problem? If not, it'd be foolish to butcher something you depend on.
Always have a plan B in this case.
And listen to Retro above.
Put the bike on the stand and slowly turn the crank a couple dozen times to find the absolute tightest spot.
Then ask yourself- Is it worth messing with.
Probably not.