I went through this with another mfr's coils. The lower pigtail on those coils is too long, which is what causes the bow. In front JK uses the same lower spring pad on both sides, just reversed. So, the lower end of the coil seats in grooves that are reversed side to side. If the coil end is too long, as they are on those coils, the spring will tip forward on the driver side, rearward on the passenger side and they will eventually bow. The lower and upper ends of the coils need to terminate exactly 180 degrees opposite each other for the springs to seat properly and stand up straight. FWIW, I fixed a set of these for another owner by simply cutting off the excess lower pigtail on each coil. If those are under warranty don't do that, but check to be sure the new ones are wound correctly. BTW, this gets worse the taller the lift.