garysol1 

I am trying to fix a shifting problem on my Burley. The bike is factory equipped with a Taigra STi's, Deore rear derailer and a Sunrace 9-speed 11-32 cassette. The chain is a SRAM pc951 chain. I have adjusted the cables to get a perfect upshift(from small to big) but when I try to go down through the cassette the chain will stay on the cog it was on until I have shifted down twice. The chain will then go down 2 gears so I have to upshift one to get my desired gear ratio. If I only click down one gear nothing really happens except a bit of noise until I shift a second time. Anyone else had this issue? I am thinking maybe it is just a miss match combo but really the only thing non factory is the SRAM chain.