741 - crush sleeve and shims?

Yes I was thinking about the backlash adjustment - I have a dial indicator and the factory service manual. I have less than 70 inch pounds full assembled (as I said, we got about 60 or less) so looks like this is ok then, should be even less when full of oil. BTW This forum is great, really appreciate the help and the info. I was a bit worried that the 741 might not be strong enough behind a 400HP+ 340 but reading through the posts over the years from people worried about this and all the information about the 741, I have no concerns at all about using it. Eg, some things I read from this forum:

The 741 which is supposedly the "weakest" of the three cases, has a larger pinion diameter than a 9" Ford!
The 741 even though has the smallest diameter pinion, it is straight, whereas the 742 and 489 pinions had steps or risers to give greater diameter and this is potentially a stress area, and one poster said that is the place where he has seen them fail
The 741 in the early and mid 60s was used behind Max Wedges and Hemis, as that's all they had, also used in the Dart 383 GTS and more...
And in heaps of racing applications with no problems by people

So I have much increased respect for this carrier now