How do I get the burned-on gunk off the lip of the top lid to apply a gasket?

[Lost in China]

I got a Lava Lock gasket (courtesy of RonB last time I was in the States, thanks!) and need to apply it to my Weber 22". But the inside of the lid has burned-on gunk. If I stick the gasket to the gunk instead of the metal, it will fall off. I tried shooting it with heavy duty degreaser and it didn't work very well. Also I'm almost out of degreaser. What else can I try to get this gunk off? I read the grill cleaning guide and it doesn't really say anything.

[mattcotool]

Try heavy duty oven cleaner, then wipe with alcohol. Should do the trick.

[Danjohnston949]

Starting Fluid, Ether or Carburator Cleaner Should Also Work!
From a Backyard Cremator in Fargo ND, Dan

[Craigar]

Ha! What, no muriatic acid? You crack me up.

[Brewmaster]

brake kleen

[Lost in China]

Oven cleaner. Another only-in-America product. Fortunately, a Taobao seller has some. Just ordered. Made in Parsippany, New Jersey. Thanks! My first cook of the season is Sunday and it's time to knock it out of the park!

[Mr. Bones]

Sending Best of Luck on yer upcomin' cook!!!
Zàijiàn!

[RonB]

Good luck.

[JCBBQ]

Before installing my high heat gasket I had to remove the old one -what was left of it- that had been fried to a crisp onto the ceramics of the top and bottom of my Primo. I used a dremel w a carbide burr to remove all the junk. Then I wiped it down w acetone before applying the adhesive.