还的去搞，哎，先回来去手电，放点图：
常见问题，NG900/OG9-3的manual AC/hear control
症状：air flow direction knob不管事了
俺的是shaft断了，版上mimicoco的是knob扭花了。
我照着这个在做： http://www.thesaabsite.com/cabinknobshaftreplacementsaab900-93.htm
stuck在这一步：
“. Holding the tip of the shaft, guide it with your fingers as close to the
heater box as possible. It should snap into place with little force.”
接heat box的那头怎么也摸不对位置，回来找手电。
能看见应该就能搞定应该，呵呵
