Thanks, appreciate it. Spiro locks and wire locks are just something that takes getting used to. I work with them day in and day out, and over time you start to get the knack on how to install them. On many of occasions, when it comes to "ring groove spacers" you have to be very, very careful, as we have found that the piston manufactures do not necessarily have a full inventory of ring groove spacers and on many of occasions send the pistons with the incorrect ones. Some having the i.d. of that spacer too small where as it doesn't sit properly in the oil ring groove, others that the i.d.'s are too large which has them butting and actually scraping the cylinder wall as the piston travels up and down. It has to fit nice, and the parting area has to just meet without actually butting, and the o.d needs to be less then the o.d. of the pistons skirt just right under where that ring groove spacer sits. You also have to look very closely at that ring groove spacer, as it has a dimple, and that dimple goes down and needs to sit in the opening area where the pin is. I sometimes grind that dimple down so that if the ring groove spacer does move, it doesn't lock up the oil rail and expander.