If you use a single strand of brass bristle from your BBQ brush or gun cleaning kit, it shouldn't damage the jet orifice. I also use carb cleaning aerosol spray with the straw. But it's not always enough pressure to open the jet up.OK, no problem. I am not too cool with the wire idea, but will blast carb cleaner through each orifice. I will look into th Shindy kit. Thank you.