Figured I would open up the secondary on the 97 Formula Deluxe today, and see if maybe its the issue why I can't go over 125KM/hr? Well I pulled the snap ring and washer off but the helix is stuck? Won't budge, loaded a can of Wurth Rost Off Ice on it and still nothing? Is this a common problem, machine has over 15K on it and I don't think the secondary has ever been touched. If I can't figure this out ill just buy another one and load the new spring and cam shoes I got into that one!