How do I fix a blurry arrow in an alias icon?
Solved! I was able to solve this problem by going to "Show View Options" (Right Click on Desktop Space) and adjusting the icon size. You can set it back to the size you had it originally but somehow making an adjustment refreshes the screen and the arrows come back sharp and clear. 

Before I discovered this I tried making icons different resolution sizes thinking the arrow was trying to "match" pixel resolution - but that apparently isn't the case. I would have used the "change icon file name" but somehow I wasn't able to get "system" approval even though I'm the admin.