Yeah I do not have a dial bore gauge but I have a vernier caliper accurate to 0.0001". I have to grab the new piston/pin back from the machine shop but with the old piston last night I heated it in my oven and the pin slipped in and out. With that piston at room temp there was a 0.0005 interfearance fit but once it was at 150*f I measured again it was 0" fit. Does that sound about right or should I have the machine shop measure more accurately?