so i am finally around to the point where i would like to get my mixture correct. only problem is the mixture screw which is a stem sticking out the top of the meter housing doesnt eant to seem to go anywhere. this is a 79 so this is before the steel ball plug. ive tried turning it with a 3mm, it's stripped out, tried vice grips and penetration lube, just burred the stem. tried hitting the center with a punch and hammer, just makes a big divet. has anyone run into a similar problem before? have you had any success in getting it to function? i was thinking of removing it and having a plugged hole like delorean guys do but i dont know if it's part of the housing or if you can remove it from the underside. experience? pointers?