Thank you for saving me the typing!Adjusting caster changes the angle at which the differentials pinion sits. Setting caster to max causes the pinion to rotate and point downward. So every degree of caster equals a degree of pinion angle. This means the CV joint on the drive shaft must account for that change in angle. When the cv at the pinion changes so must the one at the transfer case. The change is proportional. So that puts the Transfer case joint even farther out of spec when the suspension is at full travel. The pinion or differential side naturally sits at less of an angle than the transfer case so adjustment doesn't really cause issues on that side.