If It were me I would get rid of the tie rod end joint like they did in the red rock bar. TRE's have very little travel and if you are lifted more than the bar your using is designed for then the bar will allow you to drop the pass front out even less. Whats happening is the TRE is not horizontal with the ground at ride height. That joint probably has like 15 to 20 degrees of travel and your maxing it out as soon as our pass tire drops just a few inches. It just happens to be the threaded shaft is the weak point that breaks first. I dont think making it longer would help you any. You either need to raise the mount on the axle end of the bar which will cause you to have bump steer, or you need to change the TRE pivot point from vertical to horizontal. Thats why many of the good aftermarket bars have a heim with the bolt going through it horizontally so it pivots on the bold instead of trying to get travel out of the joint itself. Thats just my 2 cents I hope it helps.