Here's a link to some pictures, hope they make sense. ?It's really pretty simple actually. ?Take out the thrust bearing and install a .015 shim. ?Put it all back together.
Interestingly, when I put the shim in I measured everything and found my worm wheel was .003 too high. ?I had planned on installing a .015 and a .003 shim only to find out the .003 wasn't needed.
-Rich-