Have a 24' str cut (older style pre-300 series ) gleaner head. Also have a 922 JD flex head (can be locked up). Both fit on my Gleaner L3. Which one would you use to do winter wheat. Always used the str cut. I think I was told by someone that the flex heads aren't really designed for cereal crops-better designed for soys. Before I experiment with the flex head what thoughts are out there.