To improve the 50mm chainline of the MTB crankset, I pulled the 2 - 2.5mm spacers on the drive side to give a 45mm chain line. Instead of one spacer on the non-drive side, I needed to run 2 since the crank bottomed out on the splindle splines. Plenty of chain ring clearance at the chain stays, even with the crank in close like this. I later narrowed the spindle and removed these 2 - 2.5mm spacers to center the crank.   (4/16)