Hi Everyone & Merry XmasI had a bad memory stick, and in trying to locate the problem, the puter Nerd replaced my mother board, and memory.They also rolled back my computer to a previous date.Now the runways appear to be very black, and when I start to taxi my aircraft I get gravel and smoke coming from the tires.I did not see this when I had the initial problems with my computer.Any assistance welcomed.Kenny G.

It might just be because it's winter where you're flying. I've noticed the runways and roads look very black in winter, and it seems like you get snow kicking up from the tires even if the runway doesn't appear to have snow on it.Jim

Tks. JimKenny G.