Header hieght retrun

I am trying calbate a 2001 9650 combine header return to cutting hight and keep getting a error 091 code. it is a non flex macdon. It worked fine untill the jd tec changed the header card Because of a card falure. Now when we try to calbrate it gets this falure code. but you can not pull it up in the corner post to adjust it. any help out there? Thanks Gale

Header hieght retrun