Pat Goss (Motor Guru) will tell you different. When I was rebuilding mine I contacted him about setting up the shims. He said he had just finished replacing a set of Van Steel arms that had failed in less than 3,000 miles. Van Steel would not honor the warranty.
He did not think much of the ultra minimum clearance used in the Van Steel rebuilds.
Who knows, maybe I put mine together all wrong. At this point, there is only one way to tell.........and I can't wait to try them out!
BTW-Virtually nobody will encourage you to rebuild your own. Van Steel will scare you, Ecklers will sell you the parts, but won't advise you, and most local shops and dealers have long since retired the old timers that use to rebuild these on a regular basis.
I don't think it is rocket science. Van Steel will tell you otherwise. In fact, he will tell you that he uses rocket science grease technology to build his axles that is only available through him and is otherwise top secret. I don't doubt he really knows his stuff, and makes a quality product. However, I don't appreciate anybody that tries to "scare" me from doing my own work.
:nono