You could go with an aftermarket seat that isnt as "thick" as the standard mercedes seat, then you could position it however you would like, if it really bugs you. Perhaps a manual seat out of a 190(euro most likely) would allow lower adjustment or a differnt steering wheel would allow you to see the gauges better. Just some thoughts...

------------------
Bart
1987 300SDL-T
1985 190E 2.3-16
1984 280GE Cabrio
1978 240D
1957 220S(running one day, I hope!)