Question for those far more knowledgeable than I. I posted some time ago regarding a bearing failure in my 348 spider transaxle. Have stripped the trasnaxle down and determined the bearing that failed is the roller bearing that supports the input shaft midway between the clutch and the crankshaft. In the parts manual #131049/138341(#21 in the view) Thinking a total failure of this bearing somewhat odd, I am attempting to determine root cause of failure. I believe a part of the cause is positioning of my input shaft too far toward the clutch. I mounted my now empty gearbox on my motor, installed the input shaft and the clutch assembly. Reaching through the empty differential port I could move the shaft 5mm+ in either direction. I believe 5mm+ is in excess of correct allowable movement. Measuring the relative position of the input shaft at various locations I noted that with the shaft forward the input shaft OD/inner race is positioned correctly in the center of the roller bearing. With the shaft back 5mm the input shaft OD/inner race is partially out of the roller bearing contact surface. I believe this could result in the roller bearing collapse. My questions: How much movement with axis is acceptable for the input shaft? How is this movement controlled? Spacer? Thanks for the help.