I agree with Cudaspaz, call Brewers, you've got the wrong combination of parts. You should not need to weld an extra length into the adjustment rod. This tells me the geometery between the z-bar and business end of the clutch fork (throw out bearing) is wrong. Good news, it should be easy to correct with new parts from Brewers. Have your bell housing part number ready when you call them.
Here's a link to their web site:
http://www.brewersperformance.com/default.htm