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			Fortunately, the wheel adjustment works fine on my 98.   I can't speak for other years but mine is ONLY designed to move in/out not up/down too.  Instead, for up down I use the seat lever to raise and lower the seat which also tends to move the seat closer or farther at the same time.
 With a little trial and error it becomes comfortable and good for me.
 
				__________________98' Boxster
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