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Due to UR2 rotation, bracket cannot be placed at UR2 (Fig.20, 16 niti). Power chain x 3 is placed between UR2 and 3 to gain space for bracketing next time. UL2 bracket is placed upside down for torque.
Xin Wei, DDS, PhD, MS 1st edition 12/10/2016, last revision 12/10/2016