Even the dimples are never exactly right. The body posts are never perfectly vertical, and the chassis is never perfectly square, so the dimples are at best a close approximation of the correct spot to cut the body post holes.

I don't do complicated paint schemes, but occasionally I've gotten a bit of overspray onto a window surface. I figured out I could use a Q-Tip soaked with Goof Off to remove the overspray, but I have exactly one swipe to remove as much as possible, because a second swipe will smear the Lexan.