I own a C 300, 2001 C 240, 2006 C 230, and classic 72 280SE. My C 240 has a problem with AC vents. The dash vents will not open to allow AC air out. I have a clicking sound when I turn the car off and sometimes when I turn the AC on. When I try to change the circulation, it can change from the floor to the top of the dash but obviously the arms or actuator is locked up. Anyone know exactly what my problem might be. Also, my daughter hit a hole with her C 230 and cracked the magnesium front wheel. I would like to know the best and most economical place to purchase another wheel.

Thanks for any info.