Hi I have a 2011 WR9770 and the AGI-3 is acting up on the System 150. At least I think that is what is going on. What are the options to replace this globe? I know I could probably go with an AGI-4 but I'm not really excited about that. Are there plug and play options from other companies? I would like to upgrade swathers next winter but would really like the autosteer to work for this season. Thanks