SO Lapuser just how did the rest of the install go after dinner? Well, I am glad you asked. The ISO 2001 Chinese precision splined shaft went in the bearings without to much polishing. And the precision ground splines were just fine after a couple of hours of layout blue and polish and fit, polish and fit, polish and fit. The center support bearing retaining ring grooves were cut in about 3/16" to far to the bed end of the shaft or this was made for a later manufactured version as the shaft 3 bolt external bearing cap at the bed end will not go in all the way now. You know what, it's good enough to work after I put a gasket behind it but you see what I mean about worthless manufacturing tolerances and practices?