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Thanks Geo, Vic and Andy as to the seat being off I saw the culprit most likely SH had you install the window crank at the back and it's pushing the seat some so tomorrow pull the tub and remove the crank to it's correct position.I have the Eduard kit and looked there already realizing the what the answer would be just for confirmation it goes all the way to the front of the rail.We all have these little "Oh sh*t, that should have" moments.