Do you know how to modd a mighty flea ???
What do you want to do to it? You can silicone it. You can clean the bearing but those bearings tend to be pretty clean in my experience and play super nice. I suppose you could satin in, but the rims aren’t polished, but they aren’t textured either.
I wouldn’t do any mods to such a fragile yoyo, besides silicone.
How do you satin a YoYo?