Dave s,
I would be careful if I found shim stock under a bearing cap. When all is done properly, a .010- crank takes .010- main brgs..the machine shop grinds mains and rods to specs so the customer can get over the counter undersize inserts to fit! Should be no guessing or shimming! Check the two bottom bolts that hold the timing cover on. They used to be installed from INSIDE the pan. You can drill and tap them for installation from the outside. If you ever want to pull the cover, it can be done without pulling the pan.

Stuart.