Originally Posted by Jon Kerr

What do you mean no spacers on the layshaft/spool? There should be 1 shim on either side of the diff/spool inside of the bearing. The instructions say 2 shims but that'll make it too tight. The shims that go on the ends of the layshaft are needed too. Just make sure everything is built straight, and like wyd said take your time. Also, with the stock CVD's, I'd suggest you rebuild them before you install them to make sure their built right. Use blue thread lock on the set screw and don't tighten down too tight. The coupling being hollow doesn't support the pin as well as the new ones that were just released. So if you over tighten the set screw, it can crack the pin without you even knowing. The CVD will come apart on the track even without hitting anything.