I was wondering if anyone knows how much of a performance hit automatic numbering like ARN causes? I am curious because I have not really seen too much of this feature used on rolling stock and I really like this feature. Ultimately, I am looking for bethgons that have changing numbers and I have found a very limited selection. The only ones I know of are the ones at RRMods but when I loaded them up in Surveyor they are all whitewashed. I am sure this is because of my video card and I can't upgrade because this is on a laptop. There are some great bethgons models by CloakedGhost that work great but don't have the changing number feature. Before I pursue editing the models to include the feature I want to know whether it is ever worth doing. If the performance hit is large then it is not worth the time. Thanks