well the engine ran fine up until i started using the after-run oil. at the end of anyday that i have been running my engine i allways run it dry. as far as the erratic manuvers before the deadstick i was doing a smooth climbout from a touch and go so im sure that wasnt it. my fuel is about a month old. i noticed that when i would dry crank my engine to prime it, on the first one after sitting for the week allot of times it would feel stuck. and that kinda worried me. my lhjs guy took it apart and found the rust. he cleaned it up and we will see what happens this weekend when i fly weather permiting and if i still have this cold that i have. glowplugs i have burnt out one so far and have about six in my flight box....thanks for all your suggestions....anyway to know if my fuel is no good anymore? thanks again guys