Heres what I am thinking now....the firing order is clockwise - 1-4-2-5-3-6....if I have this firing on the number one cylinder then number four ( the next one in the firing order) should in theory...be on its exaust stroke? Come around 180 degrees and...number four would be firing and number two ( the next in the order) would be on its exaust stroke..etc..etc? all I would do is adjust each cylinder that is firing acorrding to the firing order each 180 degrees while the other is on its exaust stroke until have come to the end of the firing sequence? Am I thinking right?