Tolivac,
let me know if you come across the gray 2-piece Straight Vane. The one that have the 'step-down notch' flex-vanes at the base. I believe the agitator base of the 2-piece Straight Vane agitator has a 1/2" longer vane than the 1-piece style. I have a Heavy Duty Super Surgilator (4 wavy & straight) vanes with flex-vanes and the other style 1-piece Surgilator agitator I'm willing to swap for a 2-piece Straight Vane.