I'd follow Dunatic's how to thread, He does a good job explaining it. I wouldn't waste the time sanding unless there are deep scratches in it. You can buff to a mirror finish using just the wheels. The only thing I do diffrent from Duner's method is start with a yellow or blue wheel instead of white, they cut faster. I also don't spin the wheels faster than 3000-4000 RPM's, You can burn the alum from the heat build up of the wheel. Doesn't really help with snow build up that much it's just something diffrent than all the wraps. Good luck and have fun. Check out my albums for polished pic's, just put pic's in there of my wife's 14 pro.