i would agree with jimmy, but would leave well alone, if it is the first flight,, ive tried this sticking , it can be done, but never really successful,, ,, usually when a flight is pulled it grows in just a tad shorter than it should be, but by past experience, it doesnt make any difference to performance,
had a bird once with broken tail feather,, the middle one ;D,, pulled this broken feather,, the bird [the 5185 cock] won many races,, so done this each year,, [then read article re. this in levi,s book on the pigeon],,,