As per above photo: Top L.H. : input shaft, 4th syncro ring, 3 - 4 shift collar (is in 3rd gear position so 3rd syncro not visible), 3rd driven gear & second driven gear. The counter shaft is the lower, all gears are attached solid to counter shaft. The middle gear in photo is 3rd, the snap ring is still in place so that's not the issue. Get the other PTO cover off try to pry on ether side of 3 -4 shift collar to move it forward.
