bobbywhite

Hello all First of all would like to say this is one of the nicest planes to fly and I've been flying since MSFS began. Not sure if this is the right post to ask this question. However, I'm having an issue with the heading, speed and altitude knobs and switching from NAV to heading when auto pilot is on. Prior to the last update it worked fine, now it won't work. I can change the numbers with the dials, but they won't engage. Probably something easy, but can't figure it out. Thanks