Slip indicator adjustment

[ccraig]

I don’t think that my turn and slip indicator is properly alighned with the airplane. When sitting on the ground and leveled the ball is about a half a ball out to the right. I thought that I could loosen the 4 screws and rotate it until the ball was centered with the airplane leveled. I can’t move it with the screws loose. Am I doing something wrong or is there no adjustment. THANKS IN ADVANCE FOR ANY ADVICE

CCC

 

[JimC]

 

[ccraig]

 

[JimC]

 

[ccraig]

 

[bob turner]

 

[huston marlowe]

 

[ccraig]

 

[JimC]

 

[ccraig]