Thanks Dave - most helpful. One issue in the ‘box which I understand can develop is that the clearance between input shaft and support bearing enlarging over time so that the annular gap can allow more and more transmission fluid to run out of torque converter into into main casing, - ultimately until the oil level reaches the level of the shaft ie.9 o’clock - 3 o’clock level. As a ‘fix’ , I understand some American company offers a very thin-walled stainless steel sleeve to slip over the shaft and a new bearing - to bring clearances back to nominal. Any advice in this regard??? I’m not sure which of your likely sources (1) or (2), this relates to.
Thanks again.
JK