Remove Rewind Knob? Advice Please

[bibimbap]

A small amount of brown rust has emerged on the threaded metal that's just under the rewind knob of my M6. This came about some weeks after the camera was splashed with a bit of sea water.
I'd consider myself an able do-it-yourself person, and it looks straightforward enough: Two small flat screws appear to be all that holds that knob in place.
Unscrew those, remove the knob, take off the rust with a fine wire brush, right? And no, the rust is not affecting any function of the camera.
Do it? Don't do it? Steve, you're just being a nit-picking idiot?
Your advice and experiences are appreciated.

P.S. When the folks at the SeaWorld San Diego say those seats near the dolphin show are in the "Soak Zone" not the "Splash Zone" ... pay attention. I didn't. Thus the post.

Steve

 

[mad_boy]

I would do it, if only to check that there is no other damage there.

Mac_boy

 

[Xmas]

Simpler is to wipe with q tip dipped in sewing machine oil, but not dripping

Noel

 

[Andrew3511]

No, do it. It's not difficult. BUT make sure you have the camera on a tray or something that will save you losing anything that falls off. There is the world's tiniest grub screw under the rewind crank. Undo that, put a screwdriver bit into the slot on the post (or take the bottom plate off and hold onto the take-up spool) and just unscrew the crank. And as they say in the car manuals, reassembly is a reverse of the above procedure BUT DON'T LOSE THE SCREW as it probably is unavailable from Leica and you will have to buy a whole new crank at over £50.00 on this side of the pond