I have a Beta TR34 that has a sticky clutch on first use.  After the bike has sat for a day, when I first start the bike, the clutch will not disengage.  The bike will lurch forward when you first put it in gear with the clutch pulled in.  After that first lurch, which almost always stalls the motor, I can start it again and all is well.  The clutch acts fine other than that.  Any ideas on what might cause this?  When I physically inspected the clutch by pulling it apart, it looks ok.  

Take a look at

 

 

Thank you for that link.  I now have a weekend project.

It took me a couple of hours,  works perfectly last weekend. 

 

Got this accomplished over the weekend.  Tedious, but well worth the work.  Thanks again for pointing me to the fix.