Hey, I might be the only one crazy enough to spend $49.95 for pinball dome, but the end result is well worth splurging for! I put a yellow Cointaker LED flasher (Super 5) inside the flame Dome, which looks so much better than an incandescent 906 inside a standard red dome.
The screws fasten the flame precisely to the rocket ship and cover the flasher's opening perfectly. The flame is slightly taller, perhaps a quarter of an inch, so place two O-rings on the screws that hold the rocket ship, raising the ship just enough. I have not had a ball strike the flame yet... Finally, the printed plastic is a little "gritty" in feel. Nothing bad, just different than a smooth pressure injected molded part.