Clutch face multiple grooves

[Auglen]

Was looking over my neighbors Sidewinder and found grooves on the primary clutch faces. Outer side is not as noticable/deep as the engine side.
Is this something to be concerned about? Alignment issues? Sled runs well.

 

[fatchance]

Are you sure they are grooves, that would take allot of miles slipping the belt badly at speed. Looks like belt marking. Clean with acetone and a fine ScotchBrite pad. You will usually see grooves down low on the sheaves from belt slippage on take off with a hard compound belt.

 

[STAIN]

Looks like those clutches need some maintenance and dialing in.