Spirit System

A minor question, I have several GTR units purchased new and all of them have yellow ends on the antenna wires. I recently bought a used GTR and it has clear ends. Does this indicate a hardware revision was made between the clear to yellow?
Thanks!

Hello,

this indicate the previous user had some accident which stripped down the shrink tubes. All new RS and GTR units have yellow shrink tubes.

Thank you, I thought that might be the case. Any reason I should be concerned about flying it? Or should I send it in?