Well Earl, I figured out I only need 3 shims (all 260's) and found an ebay seller selling them for $8 each and offering a $3 trade-in so, I no longer will need to rent your shim kit - thank you!
Attaching a worksheet I came up with to help with valve shim replacements.
Paul Martin
601-966-8771
Valve Lash Check and Adjust - SHIM Worksheet.xlsx