These changes should be made to the LandFX>Blocks>Graphics>Irrigation>Callouts location. However, it is not as simple as doing just a "Save As" for that one block. You will need to make the changes to every block for every size available. Your best bet would be to make the change to the exact callout style for all sizes, overwriting our block entirely. Then, make a backup of these changes for future need. This way, if you need to use our original block you can just simply delete the edited version entirely from the callouts folder and the default will come back in automatically. Then, if you want your revised block back, just copy it back into the callouts folder and replace the default blocks. Make sense? Give us a call if you run into any problems.