I'm building a spindrift 11n. The plans say use gudgeon/pintle from Racelite RL358, RL358l, RL358s, and spring RLl337. The pintle opening is only 3/4". Clearly the wrong part. The "spring" is not a spring at all. What are the correct part numbers? Also the gooseneck shown has a curved base plate. The specified part, RL328 has a flat base plate. Doesn't work very well on a round mast. It seems that many of these boats have been built, so why are there still so many errors in the plans and specs?