I could never get it to tune properly with the timing set at 28 degrees.  But with it set where I have it now, it tunes properly and runs great.  Has real good vertical with my almost 15 lb 4 star 120.  It will climb out on take off at around 60 degree angle with a MAS 18x10 prop.  Starts easy and idles well.  I think I like it just where it is.  But I have no explanation for it.   Maybe it is the ignition.  It is an RcExl ignition.  I had an XYZ ignition on it at one time and if I remember right, it ran at the 28 degree mark.

BTW, the carb has a new overhaul kit in it. With new screens, fuel pump and gaskets, regulator, and needle. 


Jim</p>