Air Bleeding and carb bleeding means that carb is taking air or carb is expelling fuel from its side, as I have seen many times in my friend's engines which are O.S. .46 and .25? Sorry If this question of mind sounds little stupid, but I wanna know the real meaning of carb bleeding and air bleeding.

Second thing, Once again as one of our respectable poster said Dont believe in everything you read or see, thats true, but As I have a pretty pretty bad experience with my HB .61 german engine, and it made my plane crash many times. I'm using now K&B's .61 size engine with pump, but not using pump, it still gives me hard time. I noticed one thing, that new technology's engines are much more good than old one's or probably Im the one who is unable to set their needle valve setting despite senior friend flyer goes with me, but I know one thing for sure about his habbit once engine is set on high rev, he always slightly slows it down on lean, when we lift the nose up engine starts dying, if we do more rich, then it starts going pretty well. What I figured out so far that whether engine has bushing or bearings, whether it is ABC or Ringed, whichever engine runs good without problem, its the best engine, same can give hard time, and same can be the best for one.

Thanks for your input

Mody