Rebuilt 904, no 3rd gear???

The Trans-go shift kit mentions that if a 3/8" check ball is used in place of a 11/32" ball in one spot in the valve body it'll cause no 3rd gear. Do you think that could be a possibility? Here's a picture of the valve body with a red arrow pointing to the check ball.

If your sure it isn't that the only other thing I can think of at the moment is a stuck 2-3 shift valve in the valve body. Did you disassemble the valve body and clean everything real good and lube the valves with atf when you assembled it?

The pressures will be higher because of the shift kit.