I've selected manual trim for this aircraft. I've gathered that the electric trim movements can be somewhat course compared to the fine adjustment obtained via the manual trim. I would rather prefer a manual "feel" to the trim as it's such a vital control surface for fine-tuning accurate pitch attitude in all phases of flight. I threaded the trim cable fore to aft and attached it to the WD-415 anchor nut on the trim tab. After mounting the vernier control and some minor adjustments I was easily able to achieve the book (desired) limits of 35 degrees down travel of the tab and 25 degrees up travel of the tab. Very smooth operation with fine, delicate movements if desired. ...Nice!