After the adjustment of the typehead homing, balance arm and rotate arm, check the detenting of characters "P", "Y", "_" (Underscore) and Comma (,). They should all detent the same.
After they are detenting the same - adjust the rotate link (123-15) with the rotate link turn buckel (123-16) until the characters detent .015" down the negative slope. (Similiar to figure 131)