Hi there, I have an 88 gleaner R50 that does not have automatic height control. How can I add this feature on it. Can I use parts off of an L2 that has the auto height control or is there a better affordable option. I have a 25 ft flex head that has the ability to have auto height control. I have had L2s my whole life and this is a new machine for me. Please let me know anything you know about this subject or how good the combines are. It will be use primarily for beans. Thanks!