I agree with your logic, but I'm wondering if the smallest offset (of 0.007") would be of any benefit. Being on the edge of acceptable tolerances is rarely best, even if it is "good enough". Seems to me if I offset the bellhousing 0.014 (which is what the 0.007" would do) I would be about 0.00425 in the opposite direction. So instead of an offset of 0.00975 toward the "7:00 o'clock position" I would be 0.00425 to the "1:00 o'clock position". I know it's splitting hairs, but now that the transmission is out and this should be my last clutch for a long time, it seems a small effort for a small gain. But it can't hurt.... This seems better to me.I think you may be off in your tolerance. If the smallest offset dowel is .007, then anything needing less than that is probably within tolerance.