Hello. I am replacing the head gasket in my 1991 190E 2.6 and have just removed the distributor rotor (step 7) and the 8mm bolt (step 8). I am at the step (step 8) where the manual says pull the driver out by hand. I believe this is called the distributor driver (not sure, could be camshaft driver). It definitely will not come out by hand and I have tried prying it out, but it won't budge. Does anyone know how to remove this?