Aww shucks. I was thinking you were talking about the adjustable kit - I didn't realize you had simply replaced the end fittings. Instead of cutting anything, you may be able to reshape then ends of the cross bar so they don't interfere with the stainless fittings (use a sander) - but you're right, it just that the holes in the new fittings are too close to the rudder arm not allowing enough room for the material between the end of the cross bar and the hole in it. This probably means that the rudder alignment will be slightly off as well.