I did set the idle gap to 1-2mm, and the car does idle, and when I gas it it does go. However, when I lean the LSN about a quarter turn, THEN it dies when I hit the gas.

The other issue is that it does not idle down at all. When I have it so that it does idle, it idles incredibly high, nearly half throttle. Even when the buggy is on the ground and the wheels aren't spinning, the engine revs are still super high.

Does that mean that it's still too rich?