Actually, the material might not be the main issue. Silicone needs a completely different baking time and temperature than metal. You probably just need to adjust your recipe.

Tell me about it, my neighbor just had to junk his old truck because the repair cost more than the thing was worth. Now he's stuck with a new payment and some app to warm the seats he'll never use. Makes you miss when a car was just a car, not a monthly bill on wheels.

Yeah that's rough, @troy_harris is right about nature winning. You gotta get one of those heavy duty barrels with a brass spigot next time.