833 OD sticking in 4th, chipped synchro

Besides the A833, there is another application that uses a special 308 bearing with a 307 bearing inside diameter. The "7" in 307 means 7 x 5 =35 millimeter inside diameter but the special 308 has a 35 millimeter outside diameter when it should have a 40 (8 x 5) millimeter inside diameter.
Back on topic, there is a 0.795" wide 308 bearing that would fit an A833 but the bearing should be the 0.825" wide version usually called the 308 SG8.
It may be that you have 1 or 2 incorrect bearings in the transmission, moving the input too far forward and/or the other mainshaft gears too far rearward, and it may have taken years to wear just enough for the problem to appear.