we had a f3 , happened last fall; same darn thing. take off the throat (MOTHER-IN-lAW JOB) * ill explain that in a later post if you all dont know what this is * take it and have the best welder u can find fix it. we did , cost only $120. we ran a 6 rw head and over hard ridged ground, just to much twisting i guesss. it s not easy but well worth the time, and thanks tom for helping w_ explaining what we had to do to remove the throat. rc