As Techinspector1 said, everything is experimental when you alter the stock suspension. I'm sure you are runing dropped spindles and probably are running wheels with a different offset than stock. These mods will effect how camber and toe, etc. change during suspension movement (compression/rebound). All this gets very complex. Your best bet here is to make an alignment change that might correct what you notice in tire wear (outside edges of both tires wearing would indicate to me that you need to adjust toe toward the "toe-out" direction, but this could also mean that camber on both sides should be adjusted in the negative direction and then the toe would have to be reset). Good luck!