About piston sizes. Can you simply add the holes sizes to get a sort of piston number? Like say the 55 piston 4 holes most people used to run. I think the holes size was about 1.2mm. They combined would be 4.8 right? When we now run 2 holes with 1.6mm holes that would be 3.2mm. That would make a much tighter piston, am I right? If you wanted to go for more pack, why just not run the 57 pistons? Think they have 1mm holes. Do you want even more pack then that?
Another question, does it makes any difference if I run 2 holes at 1.5mm or 3 holes at say 1mm?