Gearbox Input Shaft Needle Roller Bearing

[AlanG]

I'm reassembling a TR6 J Type gearbox (Cd 51088) following a rebuild and I've got a bit of dilemma and wondered if any of the gearbox guru's out there could advise me. When I reinstalled the input shaft it would not go fully home into the gearbox casing and that the gears were prevented from rotating freely. With it removed I checked the length of the new needle roller bearing (Catalogue Item 10. Pt. No. 158368). It measured .620" (15.7mm). The old bearing measured .589" (14.9mm). I assumed that this was the problem, the excess length preventing the input shaft from going fully home, possibly a bad or incorrect bearing had been supplied. However, Rimmers assure me that all their stock is the same and there been no other complaints. Checking with Moss they measured a bearing for me and it was a similar 15.6mm approx. If anyone has access to a bearing would they please measure it's length for me? Would the excess bearing length cause this problem or what else might it be?

Thanks

Alan.