....and for anyone installing ARH 1 7/8 LTH, I shortened the following studs: Lower studs on #4, #7 and #8, and upper studs on #1 and #2. Shortened using a dremel tool w/ cutoff bit to achieve 4.5 cm in length (stock is 5.5cm). In hindsight, it is probably much easier to just replace those with new studs....