I agree with everything Buddy said. I have one of those short boomed Ensigns and so does a friend. Neither would pull the sail far enough aft with the out haul. To solve the problem we put new small diameter sheaves in as far aft on the boom as possible. In my friends case we hack sawed a slot in the boom casting and drilled an axle hole in it and installed a 1 inch diameter sheave. In my boom I was able to install the smallest thru deck block Harken makes. Both are set up with an multi part outhaul tackle installed inside the boom. In both cases we got rid of any shackles and tie the outhaul line with a small knot to take up as little space as possible. Instead of the original wire we use 1/8 inch dyneema line. Perhaps deleting just the shackle if there is one is good enough, should be the first step anyways