Brake fluid reservoir leak

[Firecatdude]

Has anyone had a very small leak from their brake reservoir? This is on my buddy’s 2022 thundercat. I see they updated the part number for the reservoir but not the whole master cylinder assembly as a whole. Not sure what changed. Maybe a better oring. Looked to see it the Yamaha part number had changed but couldn’t verify if it did. Thanks

 

[MrSled]

Have not seen any leaks on sleds I have worked on. Look for cracks.

 

[Turboflash]

Don't overtighten screws. It's plastic!.