I am learning how to tension and true wheels for my and my wife's bicycles. Did mine and everything worked great. Now I turn to my wife's Schwinn and her wheels have an unequal spoke pattern. The spokes are arranged in groups of 4 spokes with a gap and then another 4 spokes, etc. How do I balance and true this wheel. Is it any different than a regular wheel of does the gap in spokes mean some special technique to get the wheel trued. Thanks for the help.