I use %14 castor with the Klotz castor ( less fuss and u know it will mix properly ). If I remember mix it a week before use and shake daily . I think it says to flip it over a 100 times before use but I cant remember much else . Just had a quick look for the instructions but no luck , there here somewhere so get back to me if u need to and I will have another look . Its pretty messy and I give the plane a quick wipe down between flights , also the needle is touchy so a click here and there makes a big difference . Others have used the glow needle with good results . Not sure about the carb but I guess you could pull it apart for a quick look or run as is . VERY IMPORTANT to pull the back plate off and look for swarf . Mine had enough to make another engine and thats written in the instructions as well . Im a big fan of your website so thanks for that , cheers the pope