Jam,

Check you posture also. Slumping shoulders can cause all kinds of problems.

You may want to try to work from a shanked finish position back through to impact position and see where the problem is coming from.

Have a pro look at your swing. Another set of eyes can spot something faster than you can fix it.

Just a few more suggestions, hope you get it back on track!

Are you from Louisiana by any chance?

GolfBald