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  1. zander lane

    Mar 29, 2016
    Likes Received:
    ...was wondering if anyone knows of a good tutorial or instructions for replacing a p4 engine? (I have around 15 hours of flight time on my p4 and one of the engines is markedly stickier than the others when freely spinning - I have read that this is not a good thing and can end abruptly so wanted to just replace it now.)