Lost Kickdown

I'm pretty sure it is something with the valve body, I just don't know what. I am using the kickdown lever, spring, cable, bracket. It was working until I changed the 1-2 shift spring. It is a Cope modified valve body and I checked the stem of the TV valve was ground down on the end like a TF2 kit calls for. It is more like 7/32" instead of 9/32" though, would that cause problems being ground down too much?