Mixing Transaxle Cases

As mentioned by others, I don't recommend this since they are line bored during production. If you cannot get the case welded (make sure the case is well baked prior to welding due to porosity and oil absorption), try getting another case in better condition, they are not that difficult to locate.

Check to see if the corners on the diff carrier tapered roller bearing cover are not warped inwards as this is common and if bearing pre-load measurement is made at the warped corners, it won't be accurate. The amount of "corner bending" could equal or exceed the gap pre-load spec in some cases.