couple little details: some of those springs do have a "short" end and a "long" end, if yours are like that then the short end goes into the canti body, and the long end thru the plastic cap. The springs should have a "color code": they have cadmium plating and the silver color plating indicates RIGHT side, the gold color plating indicates LEFT side, this is pretty consistent with ALL Shimano cantis that use those springs. You'd use the SLR hole if you have a SLR lever (with a "helper spring" in the lever) and the NORMAL hole for use with any other lever.