Thanks for your cumpliments. I'm glad you enjoy our software.
Regarding to your question, normally should not be necessary to scale RailClone, because the units are converted automatically. I just tested the "Stree road drain04" style, both using meters and centimeters as Max units, but it seems to work fine.
How do you scale, using "Global scale" parameter or using the Max scale tool ? What units do you use for your scenes ?