Are the bowed coils common? Is this something the OME J spring guys, along with SLEE 4" guys would be have to deal with as well? (I get how rotating the 3rd upward at ride height will do this... and I can see how adjustable upper arms can rotate it back down. Is the issue that everything is now moved back and the mounts are offset?)
The length of the Lower arm off set is only 11mm , I think the longer spring is where the bow comes in. Add a slight off center spring mount and some flex and you get a bowed spring. The fronts bow quite a bit more than the rears on mine.