My 2 Avet SXJs have gotten more use than anything in the past year plus, the cleaning was a little overdue. I'd have to slap the side of the reel to get the free spool going but overall still reliable relatively smooth function.
Popped em open and there was some buildup but not bad overall.
I'd like to note that the #1 reason I use Avets is for their anti-reverse. You will see in the pics that the anti reverse dog/pawl has a thin metal wire connected to it that runs to and connects to a wire and a rubber gasket thing on the drive shaft. When the drive shaft moves backwards, it pulls the wire and thus the dog into place on the anti-reverse gear. Fool proof AND silent anti-reverse! Other reels on the market use clutch bearings which have a tighter tolerance for how far the handle can swing back but eventually corrode and fail, and then backed up with dogs that have foil ears which can bend out.
After:
I've barely used any of my other reels in the last year so I don't think I need to service anything else right now.