Sorry I know theres probably a thread on this but I cant seem to find the answer. Im considering quick connect prop guards BUT I know that to install then you need to unscrew ALL FOUR screws under each motor. I also read one person say to be careful to not let the motor shift out of place while doing so. Is that a real concern? Im scared of unscrewing the screws and having a motor or two move out of place and thereby causing it not fly right. Am I thinknig correctly?