On the prior pro 600 version the auto steer engaged along with the header drop by using the resume button. With the new 21 version that option is not there and you have to engage the auto steer with the touch screen as a extra step on every turn. The resume button only drops the head, even if the shift button is used along with it the auto steer will not engage. Am I missing something? Seems like there should be a option for engaging the auto steer with the resume button. The prior version was in a 2008 8010 the new 21 version is in a 2009 8120.