Getting all my measurements down for my wheel build, and plugging the pertinent info into a spoke length calculator I get a result of 294mm. Does this spoke length hold true regardless of nipple length, and can I go up or down 1mm in order to get the spokes I want? Bear in mind these measurements were done by hand, and not the result of plugging in manufacturer's dimensions, so the measurements themselves may be _slightly_ inaccurate.