My Ulterra has never failed. In fact, I actually "failed" the Ulterra. I too it apart to see how it actually "ticks". Somehow another I misplaced the screws. I had some 3/4 inch screws, but they were too long. I just used an 1/4 20 nut for a spacer. The nuts are still on. Ha. Will replace when I pull off the lake this coming winter.

Also be reminded that there was/is a recall on some of the magnets used by the Ulterra (first try version) for position sensing. Make sure you also get this update.

I love the Ulterra. Great tool, especially for us old turds.