Do you guys agree?

No I disagree 100%. I've said this SO many times before. I cannot believe a company that builds carburetors is stupid enough to suggest using anything such as gasoline to check for vacuum leaks. That's literally pouring gas on a fire. Use a manual spray bottle full of water. NO chance for a flash fire that might destroy your entire car and possibly hurt or kill even you. Ridiculous advice. if ever there was.