Hi, I have started using my Mini 3 end of last year, so still in learning mode.  I noticed that the orange coloured tips of a few propellors became somewhat loose (see attached pic).
While I do not really notice less performance or more noise, I just wanted to check out if this should be considered as ready for propellor replacement.
Cheers, Peter

Time to replace them.  

Hi there, thank you for reaching out. To ensure your flight performance and safety, it is suggested to change the propellers for your future usage, thanks.