[RustyTeeth]

Ironically, I just did it about 30mins ago...the actual "gas cap" plastic part is the edge you see just inside the knurled part, I was able to wedge a putty knife in between the edge and the knurled edge. I slowly worked it around prying gently until the glue (pictured in Rusty Teeth pics) to pop loose. The gas cap came out easily.

Awesome, we work together and we will get this thing sweet!. My friend is working on a 3rd brake light kit.  I'm afraid drivers cant see us, with brakes under the rear hood. ugh.

Here is epoxy or glue in the lid to pry out, I gently scuffed up the new cap, dumped a bit of hot glue. Heated the whole metal cap up in my sink with a blow dryer and sunk the new cap into the old knurled cap! see pix