I switched to the top-of-the-line Bosch arm and blade, but still have the same problem...I think I will try lubing the gear assembly...the rainy season is now upon us.
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car