shifter failing?

[gixxer]

got a question. lately when i put it in d4 it reads like its it d5. and when driving it sometimes kickes itself from d4 to d5. wat could this bee? it doesnt happen every time though.

 

[scjmc]

Linkage adjustment maybe?

 

[LS4me]

got a question. lately when i put it in d4 it reads like its it d5. and when driving it sometimes kickes itself from d4 to d5. wat could this bee? it doesnt happen every time though.

My vote is shifter.