2006 R500 hard shift
 

I own this 06 with 48k..car has deveolped a very hard shift out of 1st
gear ....only when cold...never when warm....never after 1st shift..
took to MB dealer...(i had trans svc with factory parts on friday) on Monday telling of problem still...was called and told valve body needed replaced..of course with another fluid/filter chg..ok....
picked car up....next morning same problem...any ideas before i croke over dropping $1800 for nothing....of course they want to recheck..