i've miced my cylinders, and the bore on the whole block ranges from 3.3855" to 3.3895", with seemingly no pattern as to which diameter is where. i've never done this before, so please forgive me for asking: is this enough to determine whether i can use standard pistons or not? i'm going to scan the full list of readings and post it soon if more info is necessary. i've been finding some conflicting info about the L28 standard bore. my fsm says that standard is up to 86.050mm, but a piston source i'm looking to buy from says that their standard bore piston is 86.1mm in diameter. lastly, does anyone have any horror stories about black dragon pistons or ITM pistons, or should i not have any problem with either? edit: also, new photos in my flickr set. enjoy!