A904-30Rh Fresh Rebuild. No 3rd gear, Please Help

Drive is third. Start out with the lever in 1, get up to 20, shift to 2, up to 30 shift to D. But it's my understanding that there were no shifts whatsoever...maybe.. If you set the front clutch just exactly wrong, then you could have reverse but no third. Put the drums on the pump in a vise and air check the clutch packs. Cuz when it's back together, you want to be sure the only problem could then be valve body; so you don't have to take it out again. Post clutch pack clearance specs.