Originally Posted by
arsprod
I did fail to mention that when I replaced the cassette I also replaced the derailleur with a long cage (don't beat me up). I threw in the towel and ordered a microshift 10 speed shifter. These were all great ideas, thanks!
This is why you are having problems. The new cassette is not the cause of your difficulties. Unless the Microsoft shifter you ordered is compatible with the longer cable pull requirements of Shimano Dynasys rear derailleurs your problem will persist