[james schaechter]

Most tracks with Divisionals do a pretty good job with this. It is true scales can vary a bit here and there and occassionally there can be one so far off, they have to bring a service in to correct it. There is no real way to hang a number on the differences in advance if that is what you are looking for. Make sure you have some legal ballast to adjust up or down a bit and you will be fine. Everyone works off of the same scales so if they are light or heavy a wee bit, racers just tend to adjust. The biggest swings I have seen the last few years have been at some tracks on windy days. Even with that, the tech guys get creative and block the wind with a sheet of plywood or sometimes have you weight the car facing a different direction to get a better reading.