I have to ask at this point-do you have ANY previous experience operating ANY type of model engine?-because I cannot understand why you have difficulty in grasping the most basic things like installing a propeller-if the answer is 'no' then you have been simply wasting my time these past few months-and this engine is quite unsuitable for someone without experience unless they are under the direct physical supervision of someone who is experienced.
ChrisM
'ffkiwi'