For the Mr Know all, If you have ever opened a needle from the housing on a glow engine, you may have noticed the rubber O ring therein. Bust since you may not have seen that I am also sure you would have never seen the O ring the engine manufacturers put in at the carb and case joint or the muffler joint and that ignorant manufacturer of Laser engines who install multiple rubber o rings on the muffler and carb spigot.
And Sir I will saunter over to the Petrol engine thread and Diesel as well. Not because you wish but because I like these engines too. In fact love the Diesels.
And may I seek a favour? Pray if you could guide the lesser mortals to the firm that manufacturers gas engines (not petrol please)