Blower switch on manual 240D
 

The blower switch will not turn but only a half inch or so on the manual "77" 240D I just acquired. The car sat for a year or so under some fir trees so the exterior was a mess and the sun roof leaked so the inside was damp and moldy. It did work before the "lay up". Any tips on freeing it up before I start trying to figure out how to get it out?? :eek: