questions setting up my 742 (again)

the funny thing is is that I have shims in between the pinion gear and bearing I tried a .060 shim first and of course it was too deep on the ring gear, then I went to .045 and still too deep. Then I went to .032 and with no shims for pre-load and a fully torqued down pinion nut I had no pre load whatsoever. When I go with a smaller shim than .030 I get end play in the pinion.