65 Conv. My BU lights are a bit pitted and old looking so I decided to replace them. Seemed like a good idea at the time. I crawled under the car and there is an amazing amount of undercoating under there covering up the back of the lights and, more importantly, the two nut and bolt connections on each side of the light. What do you guys do to get rid of 55 year old thick undercoating? And once I get the undercoating gone, it looks like it will be a real adventure getting a wrench or socket in there. As always, thanks in advance.