I use Bolink Body wash to get the glue off. You can find it in the RC Car section of the hobby shop. It is used on lexan so it is safe for the canopy. It can also take some overspray off. I use it to take the overspray off the outside of RC car bodies. I also use it when I cut out shapes on monokote. You can draw on the monokote with marker and the Body wash will take it right off. Works Great!
Later,
Craig